{"id":8142,"date":"2026-09-30T09:55:36","date_gmt":"2026-09-30T09:55:36","guid":{"rendered":"https:\/\/cingulum.eu\/pdca-cyclus-wat-is-het-en-hoe-pas-je-het-toe-binnen-iso-27001\/"},"modified":"2026-10-14T11:22:46","modified_gmt":"2026-10-14T11:22:46","slug":"pdca-cyclus-wat-is-het-en-hoe-pas-je-het-toe-binnen-iso-27001","status":"publish","type":"post","link":"https:\/\/cingulum.eu\/fr\/pdca-cyclus-wat-is-het-en-hoe-pas-je-het-toe-binnen-iso-27001\/","title":{"rendered":"Cycle PDCA : qu\u2019est-ce que c\u2019est et comment l\u2019appliquer dans le cadre de ISO 27001 ?\u00a0"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8142\" class=\"elementor elementor-8142 elementor-7953\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c57c86d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c57c86d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-babf592\" data-id=\"babf592\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7f2b202 elementor-widget elementor-widget-text-editor\" data-id=\"7f2b202\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Key takeaway<\/h2>\n<p dir=\"ltr\"><span class=\"TextRun SCXW114502849 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW114502849 BCX0\">Documenter Plan, Do, Check et <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW114502849 BCX0\">Act<\/span><span class=\"NormalTextRun SCXW114502849 BCX0\"> ne rendra pas votre ISMS mature. Ce qui le rend mature, c\u2019est la mani\u00e8re dont les quatre phases s\u2019articulent. Les risques orientent vos mesures de s\u00e9curit\u00e9, vous mettez en \u0153uvre ces mesures et \u00e9valuez leur efficacit\u00e9, et ce que vous apprenez fa\u00e7onne le cycle suivant. Sans cette boucle, le PDCA n\u2019est que quatre activit\u00e9s distinctes. Avec elle, vous disposez d\u2019un syst\u00e8me de management qui s\u2019am\u00e9liore au fil du temps.<\/span><\/span><span class=\"EOP SCXW114502849 BCX0\" data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d7e839b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d7e839b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2dd399f\" data-id=\"2dd399f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fe3f466 elementor-widget elementor-widget-text-editor\" data-id=\"fe3f466\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p dir=\"ltr\"><span class=\"TextRun SCXW136190046 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW136190046 BCX0\">Plan, Do, Check, <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW136190046 BCX0\">Act<\/span><span class=\"NormalTextRun SCXW136190046 BCX0\">. Cela para\u00eet simple et, en th\u00e9orie, \u00e7a l\u2019est. Le cycle a pr\u00e8s de cent ans, et la norme ISO 27001 reste construite autour de lui. Conna\u00eetre les quatre \u00e9tapes est facile. Les faire fonctionner dans un v\u00e9ritable ISMS, c\u2019est l\u00e0 que la plupart des organisations \u00e9prouvent des difficult\u00e9s. Ce blog explique ce que signifie le PDCA dans le contexte de l\u2019ISO 27001, comment chaque phase s\u2019inscrit dans la norme et quelles sont les erreurs les plus courantes \u00e0 \u00e9viter lors de la mise en place de votre syst\u00e8me de management de la s\u00e9curit\u00e9 de l\u2019information.<\/span><\/span><span class=\"EOP Selected SCXW136190046 BCX0\" data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a31aa6b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a31aa6b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-acbfd3e\" data-id=\"acbfd3e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a4b8506 elementor-widget elementor-widget-text-editor\" data-id=\"a4b8506\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2><span class=\"TextRun MacChromeBold SCXW117919069 BCX0\" lang=\"NL-BE\" xml:lang=\"NL-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW117919069 BCX0\" data-ccp-parastyle=\"heading 2\">PDCA en <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW117919069 BCX0\" data-ccp-parastyle=\"heading 2\">bref<\/span><\/span><span class=\"EOP Selected SCXW117919069 BCX0\" data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559685&quot;:576,&quot;335559737&quot;:0,&quot;335559738&quot;:160,&quot;335559739&quot;:80,&quot;335559740&quot;:278,&quot;335559991&quot;:576}\">\u00a0<\/span><\/h2>\n<p><strong><span class=\"NormalTextRun SCXW108581972 BCX0\">PDCA signifie Plan, Do, Check, <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW108581972 BCX0\">Act<\/span><\/strong><span class=\"NormalTextRun SCXW108581972 BCX0\"><strong> : quatre \u00e9tapes que vous r\u00e9p\u00e9tez pour am\u00e9liorer un processus de mani\u00e8re structur\u00e9e.<\/strong> Ce n\u2019est pas une solution miracle, et vous n\u2019en avez jamais vraiment \u00ab fini \u00bb. Les risques, les vuln\u00e9rabilit\u00e9s et les menaces \u00e9voluent sans cesse, le cycle doit donc tourner en permanence. Vous ajustez, puis vous repartez pour un tour. Sans cette r\u00e9p\u00e9tition, la cybers\u00e9curit\u00e9 devient un assemblage de pi\u00e8ces d\u00e9tach\u00e9es : un pare-feu par-ci, une formation par-l\u00e0, et personne pour v\u00e9rifier si l\u2019ensemble tient toujours la route.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1dfa054 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1dfa054\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-wider\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-221c331\" data-id=\"221c331\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c3eaa0f dce_masking-none elementor-widget elementor-widget-image\" data-id=\"c3eaa0f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"883\" src=\"https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/pdca_cycle-1024x904.webp\" class=\"attachment-large size-large wp-image-8143\" alt=\"\" srcset=\"https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/pdca_cycle-1024x904.webp 1024w, https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/pdca_cycle-300x265.webp 300w, https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/pdca_cycle-768x678.webp 768w, https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/pdca_cycle-1536x1355.webp 1536w, https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/pdca_cycle-scaled.webp 1920w, https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/pdca_cycle-650x574.webp 650w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9df1031 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9df1031\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a4d7c4d\" data-id=\"a4d7c4d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7f05c7f elementor-widget elementor-widget-text-editor\" data-id=\"7f05c7f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div>\n<div tabindex=\"-1\" role=\"article\" aria-setsize=\"16\" aria-posinset=\"15\" aria-label=\"Message 15 of 16\">\n<ol>\n<li><b><span data-contrast=\"none\">Plan<\/span><\/b><span data-contrast=\"none\">: <\/span><span data-contrast=\"none\">o\u00f9 se situent vos risques et que comptez-vous faire pour y rem\u00e9dier ?<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"none\">Do<\/span><\/b><span data-contrast=\"none\">: <\/span><span data-contrast=\"none\">Mise en pratique de ces mesures.<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"none\">Check<\/span><\/b><span data-contrast=\"none\">: <\/span><span data-contrast=\"none\">r\u00e9sistent-elles sous pression ? Testez-les<\/span><span data-contrast=\"none\">.<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"none\">Act<\/span><\/b><span data-contrast=\"none\">: <\/span><span data-contrast=\"none\">qu\u2019avez-vous appris, et comment allez-vous l\u2019int\u00e9grer dans le cycle suivant <\/span><span data-contrast=\"none\">?<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<\/ol>\n<\/div>\n<\/div>\n<h2><span class=\"TextRun MacChromeBold SCXW63592868 BCX0\" lang=\"NL-BE\" xml:lang=\"NL-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW63592868 BCX0\" data-ccp-parastyle=\"heading 2\">Le <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW63592868 BCX0\" data-ccp-parastyle=\"heading 2\">cycle<\/span> <span class=\"NormalTextRun SCXW63592868 BCX0\" data-ccp-parastyle=\"heading 2\">PDCA<\/span><span class=\"NormalTextRun SCXW63592868 BCX0\" data-ccp-parastyle=\"heading 2\">, <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW63592868 BCX0\" data-ccp-parastyle=\"heading 2\">\u00e9galement<\/span> <span class=\"NormalTextRun SpellingErrorV2Themed SCXW63592868 BCX0\" data-ccp-parastyle=\"heading 2\">appel\u00e9<\/span><span class=\"NormalTextRun SCXW63592868 BCX0\" data-ccp-parastyle=\"heading 2\">&#8230;<\/span><span class=\"NormalTextRun SCXW63592868 BCX0\" data-ccp-parastyle=\"heading 2\">\u00a0<\/span><\/span><span class=\"EOP Selected SCXW63592868 BCX0\" data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559685&quot;:576,&quot;335559738&quot;:160,&quot;335559739&quot;:80,&quot;335559991&quot;:576}\">\u00a0<\/span><\/h2>\n<p><span class=\"TextRun SCXW128468633 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW128468633 BCX0\">Le PDCA est \u00e9galement connu sous le nom de cycle de Deming ou de roue de Deming. Paradoxalement, l\u2019homme dont le nom est le plus souvent associ\u00e9 \u00e0 la m\u00e9thode ne l\u2019a lui-m\u00eame jamais appel\u00e9e ainsi<\/span><\/span><span class=\"TextRun SCXW128468633 BCX0\" lang=\"NL-BE\" xml:lang=\"NL-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW128468633 BCX0\">.<\/span><\/span><span class=\"EOP Selected SCXW128468633 BCX0\" data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\n<h4><span class=\"TextRun MacChromeBold SCXW67252953 BCX0\" lang=\"NL-BE\" xml:lang=\"NL-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SpellingErrorV2Themed SCXW67252953 BCX0\" data-ccp-parastyle=\"heading 4\">Qui<\/span><span class=\"NormalTextRun SCXW67252953 BCX0\" data-ccp-parastyle=\"heading 4\"> a <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW67252953 BCX0\" data-ccp-parastyle=\"heading 4\">invent\u00e9<\/span> <span class=\"NormalTextRun SpellingErrorV2Themed SCXW67252953 BCX0\" data-ccp-parastyle=\"heading 4\">le<\/span><span class=\"NormalTextRun SCXW67252953 BCX0\" data-ccp-parastyle=\"heading 4\"> PDCA?\u00a0<\/span><\/span><span class=\"EOP Selected SCXW67252953 BCX0\" data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559685&quot;:864,&quot;335559738&quot;:80,&quot;335559739&quot;:40,&quot;335559991&quot;:864}\">\u00a0<\/span><\/h4>\n<p><strong><span class=\"TextRun MacChromeBold SCXW155709567 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW155709567 BCX0\">La m\u00e9thode a d\u2019abord \u00e9t\u00e9 d\u00e9velopp\u00e9e par Walter A.<\/span><\/span> <span class=\"TextRun MacChromeBold SCXW155709567 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW155709567 BCX0\">Shewhart<\/span><\/span><\/strong><span class=\"TextRun SCXW155709567 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW155709567 BCX0\">, physicien am\u00e9ricain et pionnier de la qualit\u00e9. Dans les ann\u00e9es 1930, il travaillait chez Bell <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW155709567 BCX0\">Labs<\/span><span class=\"NormalTextRun SCXW155709567 BCX0\"> sur un probl\u00e8me concret : comment produire des composants t\u00e9l\u00e9phoniques syst\u00e9matiquement exempts de d\u00e9fauts. Il a baptis\u00e9 son mod\u00e8le \u00ab cycle de <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW155709567 BCX0\">Shewhart<\/span><span class=\"NormalTextRun SCXW155709567 BCX0\"> \u00bb et l\u2019a fond\u00e9 sur la m\u00e9thode scientifique : hypoth\u00e8se, exp\u00e9rimentation, \u00e9valuation. Le terme PDCA (Plan-Do-Check-<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW155709567 BCX0\">Act<\/span><span class=\"NormalTextRun SCXW155709567 BCX0\">) n\u2019est apparu que plus tard<\/span><\/span><span class=\"TextRun SCXW155709567 BCX0\" lang=\"NL-BE\" xml:lang=\"NL-BE\" data-contrast=\"none\"><span class=\"NormalTextRun CommentStart SCXW155709567 BCX0\">.<\/span><\/span><span class=\"EOP Selected SCXW155709567 BCX0\" data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e88638e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e88638e\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-wider\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9210f14\" data-id=\"9210f14\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-50cf245 dce_masking-none elementor-widget elementor-widget-image\" data-id=\"50cf245\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"513\" height=\"641\" src=\"https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/pdca.webp\" class=\"attachment-large size-large wp-image-8162\" alt=\"\" srcset=\"https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/pdca.webp 513w, https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/pdca-240x300.webp 240w\" sizes=\"(max-width: 513px) 100vw, 513px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ed38df4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ed38df4\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-eb45c04\" data-id=\"eb45c04\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1c14b44 elementor-widget elementor-widget-text-editor\" data-id=\"1c14b44\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h4><span class=\"TextRun MacChromeBold SCXW63157050 BCX0\" lang=\"NL-BE\" xml:lang=\"NL-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SpellingErrorV2Themed SCXW63157050 BCX0\" data-ccp-parastyle=\"heading 4\">Quelle<\/span> <span class=\"NormalTextRun SpellingErrorV2Themed SCXW63157050 BCX0\" data-ccp-parastyle=\"heading 4\">est<\/span><span class=\"NormalTextRun SCXW63157050 BCX0\" data-ccp-parastyle=\"heading 4\"> la <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW63157050 BCX0\" data-ccp-parastyle=\"heading 4\">diff\u00e9rence<\/span> <span class=\"NormalTextRun SpellingErrorV2Themed SCXW63157050 BCX0\" data-ccp-parastyle=\"heading 4\">entre<\/span><span class=\"NormalTextRun SCXW63157050 BCX0\" data-ccp-parastyle=\"heading 4\"> PDCA et <\/span><span class=\"NormalTextRun SCXW63157050 BCX0\" data-ccp-parastyle=\"heading 4\">PDSA?<\/span><\/span><span class=\"EOP Selected SCXW63157050 BCX0\" data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559685&quot;:864,&quot;335559738&quot;:80,&quot;335559739&quot;:40,&quot;335559991&quot;:864}\">\u00a0<\/span><\/h4>\n<p><span data-contrast=\"none\">William Edwards Deming, un prot\u00e9g\u00e9 de Shewhart, a repris le concept et l\u2019a introduit au Japon dans les ann\u00e9es 1950. De l\u00e0, il s\u2019est fait conna\u00eetre dans le monde entier, ce qui explique pourquoi la m\u00e9thode porte \u00e9galement son nom. Le terme PDCA tel que nous le connaissons aujourd\u2019hui n\u2019est apparu qu\u2019\u00e0 cette \u00e9poque : des participants japonais aux conf\u00e9rences de Deming ont retravaill\u00e9 son mod\u00e8le pour en faire le \u00ab Plan-Do-Check-Act \u00bb. Deming lui-m\u00eame n\u2019a jamais adopt\u00e9 ce terme. Il pr\u00e9f\u00e9rait Plan-Do-Study-Act (PDSA), car il estimait que \u00ab Study \u00bb traduisait mieux l\u2019essentiel. Pour lui, la troisi\u00e8me \u00e9tape consistait \u00e0 tirer des enseignements de ce qui s\u2019\u00e9tait pass\u00e9, et pas simplement \u00e0 le v\u00e9rifier.<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">En pratique, la distinction ne change pas grand-chose. Que vous parliez de PDCA ou de PDSA, l\u2019id\u00e9e sous-jacente reste la m\u00eame : une am\u00e9lioration structur\u00e9e et continue.<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\n<h2><span class=\"TextRun MacChromeBold SCXW12859385 BCX0\" lang=\"FR-FR\" xml:lang=\"FR-FR\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW12859385 BCX0\" data-ccp-parastyle=\"heading 2\">Le <\/span><span class=\"NormalTextRun SCXW12859385 BCX0\" data-ccp-parastyle=\"heading 2\">cycle<\/span><span class=\"NormalTextRun SCXW12859385 BCX0\" data-ccp-parastyle=\"heading 2\"> PDCA <\/span><span class=\"NormalTextRun SCXW12859385 BCX0\" data-ccp-parastyle=\"heading 2\">est-il<\/span> <span class=\"NormalTextRun SCXW12859385 BCX0\" data-ccp-parastyle=\"heading 2\">encore<\/span><span class=\"NormalTextRun SCXW12859385 BCX0\" data-ccp-parastyle=\"heading 2\"> pertinent <\/span><span class=\"NormalTextRun SCXW12859385 BCX0\" data-ccp-parastyle=\"heading 2\">aujourd\u2019hui<\/span><span class=\"NormalTextRun SCXW12859385 BCX0\" data-ccp-parastyle=\"heading 2\">?\u00a0<\/span><\/span><span class=\"EOP Selected SCXW12859385 BCX0\" data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559685&quot;:576,&quot;335559738&quot;:160,&quot;335559739&quot;:80,&quot;335559991&quot;:576}\">\u00a0<\/span><\/h2>\n<p><span class=\"TextRun SCXW209994130 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW209994130 BCX0\">Aujourd\u2019hui, vous ne trouverez plus de mention du PDCA dans l\u2019ISO 27001. Pourtant, le principe y est toujours bien pr\u00e9sent. Vous pouvez encore l\u2019appliquer aux articles de la norme, m\u00eame si le texte lui-m\u00eame n\u2019utilise plus ce terme. C\u2019est pourquoi le PDCA reste une grille de lecture utile : une fois que vous r\u00e9partissez les articles en quatre \u00e9tapes famili\u00e8res, ils deviennent bien plus faciles \u00e0 comprendre et \u00e0 mettre en pratique. Et cela vous offre un moyen concret d\u2019atteindre l\u2019am\u00e9lioration continue exig\u00e9e par toute norme ISO de syst\u00e8me de management.<\/span><\/span><span class=\"EOP Selected SCXW209994130 BCX0\" data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f307335 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f307335\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-50c4e40\" data-id=\"50c4e40\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3e07e2f dce_masking-none elementor-widget elementor-widget-image\" data-id=\"3e07e2f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1000\" height=\"265\" src=\"https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/C939A43B-1A1C-4D39-8D6C-E2B43D500FFA-1024x271.webp\" class=\"attachment-large size-large wp-image-8161\" alt=\"\" srcset=\"https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/C939A43B-1A1C-4D39-8D6C-E2B43D500FFA-1024x271.webp 1024w, https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/C939A43B-1A1C-4D39-8D6C-E2B43D500FFA-300x79.webp 300w, https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/C939A43B-1A1C-4D39-8D6C-E2B43D500FFA-768x204.webp 768w, https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/C939A43B-1A1C-4D39-8D6C-E2B43D500FFA-1536x407.webp 1536w, https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/C939A43B-1A1C-4D39-8D6C-E2B43D500FFA.webp 1920w, https:\/\/cingulum.eu\/wp-content\/uploads\/2026\/09\/C939A43B-1A1C-4D39-8D6C-E2B43D500FFA-650x172.webp 650w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2bb2463 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2bb2463\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-05ea2b7\" data-id=\"05ea2b7\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d24c7c1 elementor-widget elementor-widget-text-editor\" data-id=\"d24c7c1\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span class=\"TextRun SCXW90678929 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW90678929 BCX0\">Les articles 1 \u00e0 3 (Domaine d\u2019application, R\u00e9f\u00e9rences normatives, Termes et d\u00e9finitions) ne figurent pas dans cet aper\u00e7u. Ils sont purement informatifs et ne contiennent aucune exigence \u00e0 proprement parler. Le vrai travail commence \u00e0 l\u2019article 4.<\/span><\/span><span class=\"EOP Selected SCXW90678929 BCX0\" data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\n<h2><span class=\"TextRun MacChromeBold SCXW74300401 BCX0\" lang=\"FR-FR\" xml:lang=\"FR-FR\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW74300401 BCX0\" data-ccp-parastyle=\"heading 2\">A quoi ressemble concr\u00e8tement le cycle PDCA dans le cadre de l\u2019ISO 27001 ?<\/span><\/span><span class=\"EOP Selected SCXW74300401 BCX0\" data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559685&quot;:576,&quot;335559738&quot;:160,&quot;335559739&quot;:80,&quot;335559991&quot;:576}\">\u00a0<\/span><\/h2>\n<p><span class=\"TextRun SCXW122627987 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW122627987 BCX0\">Sur papier, cela para\u00eet simple. Mais si vous mettez en place un ISMS aujourd\u2019hui, quatre mots abstraits ne vous m\u00e8neront pas bien loin. Chaque \u00e9tape doit \u00eatre concr\u00e9tis\u00e9e. Quels risques identifiez-vous dans <\/span><\/span><span class=\"TextRun MacChromeBold SCXW122627987 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW122627987 BCX0\">Plan <\/span><\/span><span class=\"TextRun SCXW122627987 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW122627987 BCX0\">? Quelles mesures rel\u00e8vent de <\/span><\/span><span class=\"TextRun MacChromeBold SCXW122627987 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW122627987 BCX0\">Do <\/span><\/span><span class=\"TextRun SCXW122627987 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW122627987 BCX0\">? Comment v\u00e9rifiez-vous dans <\/span><\/span><span class=\"TextRun MacChromeBold SCXW122627987 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW122627987 BCX0\">Check <\/span><\/span><span class=\"TextRun SCXW122627987 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW122627987 BCX0\">si elles fonctionnent r\u00e9ellement ? Et \u00e0 quoi ressemble concr\u00e8tement un ajustement de cap dans <\/span><\/span><span class=\"TextRun MacChromeBold SCXW122627987 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW122627987 BCX0\">Act<\/span> <\/span><span class=\"TextRun SCXW122627987 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW122627987 BCX0\">?<\/span><\/span><span class=\"EOP Selected SCXW122627987 BCX0\" data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\n<p dir=\"ltr\"><span class=\"TextRun SCXW12082615 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW12082615 BCX0\">Voici comment les quatre \u00e9tapes se traduisent dans une mise en \u0153uvre de l\u2019ISO 27001 <\/span><\/span><span class=\"TextRun SCXW12082615 BCX0\" lang=\"NL-BE\" xml:lang=\"NL-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW12082615 BCX0\">:<\/span><\/span><span class=\"EOP Selected SCXW12082615 BCX0\" data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\n<h4>1. Plan<\/h4>\n<ul>\n<li><span data-contrast=\"none\">Cartographiez le contexte de votre organisation : les enjeux internes et externes, ainsi que vos parties int\u00e9ress\u00e9es<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">D\u00e9terminez le domaine d\u2019application de l\u2019ISMS : quels processus, sites et syst\u00e8mes couvre-t-il ?<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Impliquez la direction : faites-la contribuer \u00e0 l\u2019\u00e9laboration de la politique de s\u00e9curit\u00e9 de l\u2019information et en assurer activement la promotion, plut\u00f4t que de simplement la lui faire signer.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Attribuez les r\u00f4les et les responsabilit\u00e9s.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">R\u00e9alisez une appr\u00e9ciation des risques : identifiez vos processus m\u00e9tier critiques et les risques qui y sont li\u00e9s, et fixez les crit\u00e8res que vous utiliserez pour \u00e9valuer ces risques.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Utilisez les r\u00e9sultats pour d\u00e9cider du traitement des risques : quelles mesures sont prioritaires ?<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Fixez des objectifs de s\u00e9curit\u00e9 de l\u2019information mesurables.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<h4>2. Do<\/h4>\n<ul>\n<li><span data-contrast=\"none\">Mettez en \u0153uvre des mesures techniques (p. ex. authentification multifacteur, segmentation du r\u00e9seau)<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">D\u00e9ployez de nouvelles proc\u00e9dures, comme un plan de r\u00e9ponse aux incidents<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Formez le personnel et la direction \u00e0 leur r\u00f4le dans ces proc\u00e9dures<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<\/ul>\n<h4>3. Check<\/h4>\n<ul>\n<li><span data-contrast=\"none\">Surveillez en continu si vos mesures fonctionnent efficacement<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Collectez des indicateurs, comme les d\u00e9lais de r\u00e9action ou le nombre d\u2019incidents signal\u00e9s<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Analysez les incidents signal\u00e9s et les quasi-incidents<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">\u00c9valuez ces donn\u00e9es : les r\u00e9sultats atteignent-ils les objectifs que vous avez fix\u00e9s ?<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">R\u00e9alisez des audits internes pour v\u00e9rifier formellement si l\u2019ISMS dans son ensemble r\u00e9pond toujours aux exigences de la norme<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Testez votre niveau de pr\u00e9paration au moyen d\u2019exercices (p. ex. une simulation de phishing ou un exercice sur table)<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<\/ul>\n<h4>4. Act<\/h4>\n<ul>\n<li><span data-contrast=\"none\">Pour chaque non-conformit\u00e9 ou incident, regardez au-del\u00e0 du sympt\u00f4me et identifiez la cause sous-jacente : c\u2019est l\u2019analyse des causes profondes<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Mettez \u00e0 jour les politiques et les proc\u00e9dures sur la base de ces constats d\u2019audit ou de ces incidents<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Remontez les lacunes structurelles \u00e0 la direction<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">R\u00e9injectez les enseignements tir\u00e9s dans la phase Plan, afin que le cycle suivant d\u00e9marre avec une vision plus claire plut\u00f4t qu\u2019avec le m\u00eame angle mort<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/li>\n<\/ul>\n<h2><span class=\"TextRun MacChromeBold SCXW176362840 BCX0\" lang=\"FR-FR\" xml:lang=\"FR-FR\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW176362840 BCX0\" data-ccp-parastyle=\"heading 2\">Quelles sont les erreurs PDCA courantes lors d\u2019une mise en <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW176362840 BCX0\" data-ccp-parastyle=\"heading 2\">oeuvre<\/span><span class=\"NormalTextRun SCXW176362840 BCX0\" data-ccp-parastyle=\"heading 2\"> de l\u2019ISO 27001 ?<\/span><\/span><span class=\"EOP Selected SCXW176362840 BCX0\" data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559685&quot;:576,&quot;335559738&quot;:160,&quot;335559739&quot;:80,&quot;335559991&quot;:576}\">\u00a0<\/span><\/h2>\n<h4><span class=\"TextRun MacChromeBold SCXW182730175 BCX0\" lang=\"FR-FR\" xml:lang=\"FR-FR\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW182730175 BCX0\" data-ccp-parastyle=\"heading 4\">Appr\u00e9ciation des risques r\u00e9alis\u00e9e. <\/span><span class=\"NormalTextRun SCXW182730175 BCX0\" data-ccp-parastyle=\"heading 4\">Termin\u00e9 ?<\/span><\/span><span class=\"EOP Selected SCXW182730175 BCX0\" data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559685&quot;:864,&quot;335559738&quot;:80,&quot;335559739&quot;:40,&quot;335559991&quot;:864}\">\u00a0<\/span><\/h4>\n<p><span data-contrast=\"none\">Vous pouvez disposer d\u2019une appr\u00e9ciation des risques techniquement irr\u00e9prochable. Mais si personne n\u2019en est responsable, si personne n\u2019a le temps ni les moyens d\u2019y donner suite et si la direction ne la soutient pas, ce n\u2019est qu\u2019un fichier de plus qui tra\u00eene quelque part dans le cloud.<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">De nombreuses organisations r\u00e9duisent Plan \u00e0 une seule \u00e9tape : l\u2019appr\u00e9ciation des risques. Elle est importante, bien s\u00fbr, mais elle ne couvre que l\u2019article 6. La phase Plan compl\u00e8te comprend \u00e9galement le contexte de l\u2019organisation (article 4), le leadership et l\u2019engagement de la direction (article 5), ainsi que les ressources et les comp\u00e9tences n\u00e9cessaires pour passer \u00e0 l\u2019action (article 7).<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\n<h4><span class=\"TextRun MacChromeBold SCXW161556804 BCX0\" lang=\"NL-BE\" xml:lang=\"NL-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SpellingErrorV2Themed SCXW161556804 BCX0\" data-ccp-parastyle=\"heading 2\">Publi\u00e9e<\/span><span class=\"NormalTextRun SCXW161556804 BCX0\" data-ccp-parastyle=\"heading 2\">. Mais mise en <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW161556804 BCX0\" data-ccp-parastyle=\"heading 2\">pratique<\/span><span class=\"NormalTextRun SCXW161556804 BCX0\" data-ccp-parastyle=\"heading 2\"> ?<\/span><\/span><span class=\"EOP Selected SCXW161556804 BCX0\" data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559685&quot;:576,&quot;335559738&quot;:160,&quot;335559739&quot;:80,&quot;335559991&quot;:576}\">\u00a0<\/span><\/h4>\n<p><span data-contrast=\"none\">L\u2019article 8 porte sur le fonctionnement et, dans ce contexte, cela va bien au-del\u00e0 de la publication d\u2019une politique sur l\u2019intranet. Il vous faut un plan op\u00e9rationnel : des actions concr\u00e8tes, chacune avec un responsable et une \u00e9ch\u00e9ance.<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">Disposer d\u2019une politique, c\u2019est une d\u00e9claration d\u2019intention. La mettre en \u0153uvre, c\u2019est agir en cons\u00e9quence, jour apr\u00e8s jour. Tant qu\u2019une politique ne se refl\u00e8te pas dans la mani\u00e8re dont les gens travaillent r\u00e9ellement, elle rel\u00e8ve encore de Plan.<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\n<h4><span class=\"TextRun MacChromeBold SCXW138436604 BCX0\" lang=\"FR-FR\" xml:lang=\"FR-FR\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW138436604 BCX0\" data-ccp-parastyle=\"heading 2\">V\u00e9rifier<\/span><span class=\"NormalTextRun SCXW138436604 BCX0\" data-ccp-parastyle=\"heading 2\"> une fois par an ? Ce n\u2019est pas du \u201cCheck\u201d.\u00a0<\/span><\/span><span class=\"EOP Selected SCXW138436604 BCX0\" data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559685&quot;:576,&quot;335559738&quot;:160,&quot;335559739&quot;:80,&quot;335559991&quot;:576}\">\u00a0<\/span><\/h4>\n<p><span data-contrast=\"none\">L\u2019audit interne (article 9.2) est la partie la plus connue de Check, mais ce n\u2019est pas la seule. L\u2019article 9.1 exige la surveillance et la mesure : \u00e9valuer en continu si vos dispositifs fonctionnent, et pas uniquement lorsque l\u2019auditeur s\u2019annonce. Une organisation qui ne v\u00e9rifie qu\u2019une fois par an passe \u00e0 c\u00f4t\u00e9 de tout ce qui change entre-temps. Check comprend \u00e9galement la revue de direction (article 9.3), au cours de laquelle la direction \u00e9value si l\u2019ISMS est toujours pertinent et efficace, et ce qui doit changer.<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">En bref, Check est un processus continu de mesure et de suivi, auquel s\u2019ajoutent l\u2019audit interne annuel et la revue de direction en tant que points de contr\u00f4le formels. Sans cette surveillance continue, vous risquez de ne d\u00e9couvrir qu\u2019au prochain audit, parfois des mois plus tard, que quelque chose a mal tourn\u00e9 depuis longtemps.<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\n<h4><span class=\"TextRun MacChromeBold SCXW90572883 BCX0\" lang=\"NL-BE\" xml:lang=\"NL-BE\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW90572883 BCX0\" data-ccp-parastyle=\"heading 2\">La <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW90572883 BCX0\" data-ccp-parastyle=\"heading 2\">faille<\/span><span class=\"NormalTextRun SCXW90572883 BCX0\" data-ccp-parastyle=\"heading 2\"> peut <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW90572883 BCX0\" data-ccp-parastyle=\"heading 2\">\u00eatre<\/span> <span class=\"NormalTextRun SpellingErrorV2Themed SCXW90572883 BCX0\" data-ccp-parastyle=\"heading 2\">colmat\u00e9e<\/span><span class=\"NormalTextRun SCXW90572883 BCX0\" data-ccp-parastyle=\"heading 2\"> mais <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW90572883 BCX0\" data-ccp-parastyle=\"heading 2\">le<\/span> <span class=\"NormalTextRun SpellingErrorV2Themed SCXW90572883 BCX0\" data-ccp-parastyle=\"heading 2\">probl\u00e8me<\/span> <span class=\"NormalTextRun SpellingErrorV2Themed SCXW90572883 BCX0\" data-ccp-parastyle=\"heading 2\">demeure<\/span><span class=\"NormalTextRun SCXW90572883 BCX0\" data-ccp-parastyle=\"heading 2\">.<\/span><\/span><span class=\"EOP Selected SCXW90572883 BCX0\" data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559685&quot;:576,&quot;335559738&quot;:160,&quot;335559739&quot;:80,&quot;335559991&quot;:576}\">\u00a0<\/span><\/h4>\n<p><span data-contrast=\"none\">Lorsque quelque chose tourne mal, qu\u2019un audit rel\u00e8ve une non-conformit\u00e9 ou qu\u2019un incident r\u00e9el se produise, la plupart des organisations partent du principe que \u201cAct\u201d consiste simplement \u00e0 corriger ce probl\u00e8me pr\u00e9cis. Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte ? On d\u00e9ploie le correctif, on coche la case, termin\u00e9.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559738&quot;:0,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">L\u2019article 10 en demande davantage. Vous devez \u00e9galement rechercher la cause profonde : pourquoi le probl\u00e8me s\u2019est produit au d\u00e9part. Ce n\u2019est que lorsque cette cause profonde est r\u00e9inject\u00e9e dans Plan que le cycle se referme v\u00e9ritablement. C\u2019est ainsi que vous \u00e9vitez que la m\u00eame faiblesse ne refasse surface quelques mois plus tard sous une autre forme<\/span><span data-contrast=\"none\">.<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6}\">\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Key takeaway Documenter Plan, Do, Check et Act ne rendra pas votre ISMS mature. Ce qui le rend mature, c\u2019est la mani\u00e8re dont les quatre phases s\u2019articulent. Les risques orientent vos mesures de s\u00e9curit\u00e9, vous mettez en \u0153uvre ces mesures et \u00e9valuez leur efficacit\u00e9, et ce que vous apprenez fa\u00e7onne le cycle suivant. Sans cette [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":8153,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[48],"tags":[46],"post_folder":[],"class_list":["post-8142","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-iso-27001"],"acf":[],"_links":{"self":[{"href":"https:\/\/cingulum.eu\/fr\/wp-json\/wp\/v2\/posts\/8142","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cingulum.eu\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cingulum.eu\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cingulum.eu\/fr\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/cingulum.eu\/fr\/wp-json\/wp\/v2\/comments?post=8142"}],"version-history":[{"count":0,"href":"https:\/\/cingulum.eu\/fr\/wp-json\/wp\/v2\/posts\/8142\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cingulum.eu\/fr\/wp-json\/wp\/v2\/media\/8153"}],"wp:attachment":[{"href":"https:\/\/cingulum.eu\/fr\/wp-json\/wp\/v2\/media?parent=8142"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cingulum.eu\/fr\/wp-json\/wp\/v2\/categories?post=8142"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cingulum.eu\/fr\/wp-json\/wp\/v2\/tags?post=8142"},{"taxonomy":"post_folder","embeddable":true,"href":"https:\/\/cingulum.eu\/fr\/wp-json\/wp\/v2\/post_folder?post=8142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}