{"id":17430,"date":"2025-10-13T10:20:08","date_gmt":"2025-10-13T09:20:08","guid":{"rendered":"https:\/\/cyberschool.univ-rennes.fr\/?p=17430"},"modified":"2026-03-12T14:42:30","modified_gmt":"2026-03-12T13:42:30","slug":"defhack-2025-masters-students-in-cybersecurity-in-action","status":"publish","type":"post","link":"https:\/\/cyberschool.univ-rennes.fr\/en\/defhack-2025-masters-students-in-cybersecurity-in-action\/","title":{"rendered":"DefHack 2025: Master\u2019s Students in Cybersecurity in Action!"},"content":{"rendered":"\n<p>Students from the <strong>Master\u2019s in Cybersecurity at ISTIC took part in <a href=\"https:\/\/www.defense.gouv.fr\/comcyber\/actualites\/top-depart-defhack-2025-comcyber-sensibilise-etudiants-au-combat-cyber\" target=\"_blank\" rel=\"noreferrer noopener\">DefHack 2025<\/a><\/strong>, a large-scale cyber defence exercise designed by the <strong>French Cyber Defence Command (COMCYBER)<\/strong>.<\/p>\n\n\n\n<section class=\"sliderImg\">\n    <div class=\"contain-slider\">\n            <div class=\"sliderImgs\">\n\n                \n                    <div class=\"slide\">\n                        <picture>\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-2-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-2-min-scaled@2x.webp 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-2-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-2-min-scaled@2x.webp 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-2-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-2-min-scaled@2x.jpg 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-2-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-2-min-scaled@2x.jpg 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <img decoding=\"async\" src=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-2-min-scaled.jpg\" loading=\"lazy\" alt=\"Des \u00e9tudiants lors du Defhack\" \/>\n                        <\/picture>\n                    <\/div>\n\n                \n                    <div class=\"slide\">\n                        <picture>\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-4-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-4-min-scaled@2x.webp 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-4-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-4-min-scaled@2x.webp 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-4-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-4-min-scaled@2x.jpg 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-4-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-4-min-scaled@2x.jpg 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <img decoding=\"async\" src=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-4-min-scaled.jpg\" loading=\"lazy\" alt=\"Des \u00e9tudiants lors du Defhack\" \/>\n                        <\/picture>\n                    <\/div>\n\n                \n                    <div class=\"slide\">\n                        <picture>\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-3-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-3-min-scaled@2x.webp 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-3-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-3-min-scaled@2x.webp 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-3-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-3-min-scaled@2x.jpg 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-3-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-3-min-scaled@2x.jpg 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <img decoding=\"async\" src=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-3-min-scaled.jpg\" loading=\"lazy\" alt=\"Des \u00e9tudiants lors du Defhack\" \/>\n                        <\/picture>\n                    <\/div>\n\n                \n                    <div class=\"slide\">\n                        <picture>\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-5-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-5-min-scaled@2x.webp 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-5-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-5-min-scaled@2x.webp 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-5-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-5-min-scaled@2x.jpg 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-5-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-5-min-scaled@2x.jpg 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <img decoding=\"async\" src=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-5-min-scaled.jpg\" loading=\"lazy\" alt=\"Des \u00e9tudiants lors du Defhack\" \/>\n                        <\/picture>\n                    <\/div>\n\n                \n                    <div class=\"slide\">\n                        <picture>\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-8-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-8-min-scaled@2x.webp 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-8-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-8-min-scaled@2x.webp 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-8-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-8-min-scaled@2x.jpg 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-8-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-8-min-scaled@2x.jpg 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <img decoding=\"async\" src=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-8-min-scaled.jpg\" loading=\"lazy\" alt=\"Des \u00e9tudiants lors du Defhack\" \/>\n                        <\/picture>\n                    <\/div>\n\n                \n                    <div class=\"slide\">\n                        <picture>\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-1-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-1-min-scaled@2x.webp 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-1-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-1-min-scaled@2x.webp 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-1-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-1-min-scaled@2x.jpg 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-1-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-1-min-scaled@2x.jpg 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <img decoding=\"async\" src=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-1-min-scaled.jpg\" loading=\"lazy\" alt=\"Des \u00e9tudiants lors du Defhack\" \/>\n                        <\/picture>\n                    <\/div>\n\n                \n                    <div class=\"slide\">\n                        <picture>\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-7-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-7-min-scaled@2x.webp 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/webp\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-7-min-scaled.webp, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-7-min-scaled@2x.webp 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-7-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-7-min-scaled@2x.jpg 2x\"\n                            media=\"(max-width: 480px)\"\n                            >\n                            <source\n                            type=\"image\/jpeg\"\n                            srcset=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-7-min-scaled.jpg, https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-7-min-scaled@2x.jpg 2x\"\n                            media=\"(min-width: 1280px)\"\n                            >\n                            <img decoding=\"async\" src=\"https:\/\/cyberschool.univ-rennes.fr\/app\/uploads\/2025\/10\/defhack-2025-istic-7-min-scaled.jpg\" loading=\"lazy\" alt=\"Des \u00e9tudiants lors du Defhack\" \/>\n                        <\/picture>\n                    <\/div>\n\n                            <\/div>\n\n\n\n\n    <\/div>\n\n    <script>    \n        jQuery('.sliderImgs').slick({\n            infinite: true\n        });\n\n    <\/script>\n\n<\/section>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\"><strong>A practical and immersive cybersecurity exercise<\/strong><\/h2>\n\n\n\n<p>Students specialising in <a href=\"https:\/\/cyberschool.univ-rennes.fr\/en\/education\/masters-and-postgraduate-programmes\/masters-cybersecurity-with-ciso-specialisation\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>CISO<\/strong><\/a> or<strong> <a href=\"https:\/\/cyberschool.univ-rennes.fr\/en\/education\/masters-and-postgraduate-programmes\/masters-cybersecurity-science-of-software-and-hardware-security\/\" target=\"_blank\" rel=\"noreferrer noopener\">Science of <\/a><\/strong><a href=\"https:\/\/cyberschool.univ-rennes.fr\/en\/education\/masters-and-postgraduate-programmes\/masters-cybersecurity-science-of-software-and-hardware-security\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Software &amp; Hardware Security<\/strong><\/a> at <a href=\"https:\/\/istic.univ-rennes.fr\/\" target=\"_blank\" rel=\"noreferrer noopener\">ISTIC<\/a> were faced with a <strong>cyber crisis scenario requiring composure, coordination, and responsiveness<\/strong>.<\/p>\n\n\n\n<p>Divided into teams, they had to <strong>detect, analyse, audit, and develop remediation strategies<\/strong>, all within a limited timeframe. Each mission offered participants hands-on experience in <strong>defensive cyber operations<\/strong>, combining technical expertise with rapid decision-making.<\/p>\n\n\n\n<p>Designed as a fully operational simulation, DefHack 2025 allowed students to test their skills in a dynamic and complex environment.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Preparation for careers and challenges in cyber defence<\/strong><\/h2>\n\n\n\n<p>Conceived and implemented by <strong><a href=\"https:\/\/www.defense.gouv.fr\/comcyber\/commandement-cyberdefense-comcyber\">COMCYBER<\/a>, with support from operational reservists<\/strong>, this exercise immersed students in both a <strong>military and operational context<\/strong>.<\/p>\n\n\n\n<p><strong>The scenario reflected the characteristics of cyberspace<\/strong>, a complex environment offering as many opportunities to enhance organisational performance as it does vulnerabilities to attacks: growing connectivity, massive data usage, the erasure of boundaries. These challenges provided an opportunity to <strong>test the students, who may become future cyber warriors<\/strong>.<\/p>\n\n\n\n<p>Beyond the technical aspect, DefHack 2025 also provided an opportunity to showcase the careers that make up military cyber defence and the <strong>professional opportunities available, whether military or civilian<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Students from the Master\u2019s in Cybersecurity at ISTIC took part in DefHack 2025, a large-scale cyber defence exercise designed by the French Cyber Defence Command (COMCYBER).<\/p>\n","protected":false},"author":8,"featured_media":17413,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.13 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>DefHack 2025: Master\u2019s Students in Cybersecurity in Action! - CyberSchool<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cyberschool.univ-rennes.fr\/en\/defhack-2025-masters-students-in-cybersecurity-in-action\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DefHack 2025: Master\u2019s Students in Cybersecurity in Action! 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