[{"data":1,"prerenderedAt":206},["ShallowReactive",2],{"ressources-en-case-study-ville-de-lille":3},{"id":4,"title":5,"author":6,"body":7,"category":177,"challenges":178,"counterpart":182,"date":183,"description":184,"draft":185,"extension":186,"gated":185,"gatedAsset":187,"gatedDownloadUrl":187,"image":168,"meta":188,"navigation":189,"path":190,"results":191,"seo":195,"solutions":196,"stem":200,"testimonialAuthor":201,"testimonialPhoto":202,"testimonialQuote":203,"testimonialRole":204,"__hash__":205},"blogEn\u002Fresources\u002Fcase-study-ville-de-lille.md","How the City of Lille consolidated its digital estate to steer cyber risk","OverView Team",{"type":8,"value":9,"toc":167},"minimark",[10,15,24,31,35,38,44,54,60,64,71,75,78,112,116,160,164],[11,12,14],"h2",{"id":13},"context","Context",[16,17,18,19,23],"p",{},"The City of Lille, together with Lomme and Hellemmes, runs a particularly vast digital estate: around 5,000 IT devices, more than 10 management and security tools, and several thousand agents. Each tool did its own job well: the problem wasn't a lack of information, but its ",[20,21,22],"strong",{},"dispersion",". Each team held a piece of the truth, with no global, consolidated and immediately usable view.",[16,25,26,27,30],{},"The realization came out of the crisis. In the wake of the 2023 cyberattack, one observation stood out: plenty of information, yet real difficulty getting a fast, global, consolidated view of the IS. A challenge sharpened further by the NIS 2 directive. The starting question was simple but unforgiving: ",[20,28,29],{},"do we really know what we have to protect?"," Knowing your digital estate is a prerequisite for cybersecurity.",[11,32,34],{"id":33},"challenges","Challenges",[16,36,37],{},"The organization faced three concrete issues:",[16,39,40,43],{},[20,41,42],{},"Scattered information."," Answering a simple question (how many endpoints per site, which devices are protected by the EDR, which assets are vulnerable) meant cross-referencing several sources: AD, ITSM, MDM, EDR, scanners, CMDB. No cross-functional view allowed the whole estate to be queried quickly.",[16,45,46,49,50,53],{},[20,47,48],{},"Data discrepancies."," The same device appeared in AD, MDM and EDR with different information. Several inventories coexisted, but no ",[20,51,52],{},"single, reliable"," inventory.",[16,55,56,59],{},[20,57,58],{},"A demanding context."," With the ITSM and governance initiatives ramping up, and under post-cyberattack and regulatory (NIS 2) pressure, the need for a reliable repository to build on became a priority.",[11,61,63],{"id":62},"why-overview","Why OverView",[16,65,66,67,70],{},"The City of Lille chose OverView for three reasons: no rebuilding of a new inventory from scratch (leverage what exists rather than replace it); exploit the tools already in place by automatically collecting their data to consolidate repositories; and gain a reliable view of the digital estate ",[20,68,69],{},"quickly",", without launching a multi-year project.",[11,72,74],{"id":73},"implementation","Implementation",[16,76,77],{},"The project followed five key stages:",[79,80,81,88,94,100,106],"ol",{},[82,83,84,87],"li",{},[20,85,86],{},"Automatic data collection."," Connection to existing repositories and data retrieval via API or flat files. No re-keying, no migration project.",[82,89,90,93],{},[20,91,92],{},"Repository consolidation."," Reconciliation of AD, MDM, EDR, ITSM and scanner data; duplicate identification and a coherent view.",[82,95,96,99],{},[20,97,98],{},"Contextualization."," Visualization of devices by site, building and department, along with critical assets.",[82,101,102,105],{},[20,103,104],{},"Operational use."," Investigations, risk analysis, device search and EDR coverage verification.",[82,107,108,111],{},[20,109,110],{},"Steering."," Building reliable indicators: knowing the estate is no longer enough; the goal becomes steering risk.",[11,113,115],{"id":114},"results","Results",[117,118,119,132],"table",{},[120,121,122],"thead",{},[123,124,125,129],"tr",{},[126,127,128],"th",{},"Benefit",[126,130,131],{},"Detail",[133,134,135,144,152],"tbody",{},[123,136,137,141],{},[138,139,140],"td",{},"Time savings",[138,142,143],{},"No more navigating between tools: information is available in a single interface, with 100% of the estate visible",[123,145,146,149],{},[138,147,148],{},"Autonomy",[138,150,151],{},"Investigations no longer systematically require access to every source tool; exchanges are smoother and dependencies reduced",[123,153,154,157],{},[138,155,156],{},"Risk steering",[138,158,159],{},"From a static inventory to a true steering tool: identify risk areas, prioritize actions, measure progress and track remediation",[11,161,163],{"id":162},"overview-a-common-language","OverView, a common language",[16,165,166],{},"Beyond the inventory, the most structural benefit is dialogue. Infrastructure teams see the same information as security teams, and management has a synthetic view that stays consistent with operational reality. Discussions become more factual, trade-offs simpler and priorities easier to understand. It is also a concrete answer to NIS 2 requirements.",{"title":168,"searchDepth":169,"depth":169,"links":170},"",2,[171,172,173,174,175,176],{"id":13,"depth":169,"text":14},{"id":33,"depth":169,"text":34},{"id":62,"depth":169,"text":63},{"id":73,"depth":169,"text":74},{"id":114,"depth":169,"text":115},{"id":162,"depth":169,"text":163},"REX",[179,180,181],"Information scattered across many tools (AD, ITSM, MDM, EDR, scanners, CMDB…)","Data discrepancies and the lack of a single, reliable inventory","A demanding post-cyberattack and regulatory (NIS 2) context","retour-experience-ville-de-lille","2026-06-30","Case study: after the 2023 cyberattack, the City of Lille consolidates its IT and cyber repositories in OverView to steer risk and meet its NIS 2 obligations.",false,"md",null,{},true,"\u002Fresources\u002Fcase-study-ville-de-lille",[192,193,194],"A consolidated view of the digital estate, with 100% of the estate visible","Time savings and team autonomy","From a static inventory to a risk-steering tool, aligned with NIS 2",{"title":5,"description":184},[197,198,199],"OverView deployed as an overlay on existing tools","Automatic capture via API or flat files, consolidation and contextualization of the data","Reliable indicators built to steer risk","resources\u002Fcase-study-ville-de-lille","Jean-François Rosendo","\u002Ftestimonials\u002Fjean-francois-rosendo.jpg","What drew us in from the start wasn't adding yet another security tool. We were looking for the ability to federate the information we already had. The goal was simple: create a single source of truth.","IT Director","QhhMJmX__uQExXmuGQ_JEYLtg7bO5EszLGP3Arox8gA",1783099164590]