--- title: "IDECSI Case study: Recertification of SharePoint sites" description: "Discover the case study : how did a rail transport customer recertify millions of documents across its SharePoint sites in less than 4 months?" image: https://blog.idecsi.com/hubfs/SNCF-1.png --- [![Logo-Idecsi-Black-tagline](https://blog.idecsi.com/hs-fs/hubfs/LOGOS%20IDECSI/LOGOS%20OFFICIELS/Logo-Idecsi-Black-tagline.png?width=1010&height=319&name=Logo-Idecsi-Black-tagline.png)](https://www.idecsi.com/) - Solutions DETOX® pour M365 Audit, Remediation & ROI [Discover DETOX](https://info.idecsi.com/detox-m365?hsLang=en) ![Audit, Remediation & ROI](https://blog.idecsi.com/hubfs/ILLU-4.png) Solutions IDECSI gives security and IT teams full control over their data — across DSPM, Data Access Governance, Human Risk Management, and Data Volume Management. - [![download_done](https://blog.idecsi.com/hubfs/download_done.svg) M365 Data Security Platform](https://www.idecsi.com/solution/mydatasecurity/) - [![download_done](https://blog.idecsi.com/hubfs/download_done.svg) Data storage optimization](https://www.idecsi.com/solution/mydatamanagement/) - Challenges M365 Checklist 15 Warning Signs Your M365 Data Is at Risk [Get the checklist](https://info.idecsi.com/checklist-15-warningsigns?hsLang=en) ![Checklist risques M365](https://blog.idecsi.com/hubfs/Frame-2147255341.png) Your 2026 Challenges Address your most critical data security and governance challenges - across your M365 environment - [![download_done](https://blog.idecsi.com/hubfs/download_done.svg) Gain visibility accross M365](https://www.idecsi.com/challenges/visibility-microsoft-365) - [![download_done](https://blog.idecsi.com/hubfs/download_done.svg) Get Ready For Copilot M365](https://www.idecsi.com/challenges/m365-copilot/) - [![download_done](https://blog.idecsi.com/hubfs/download_done.svg) Control external user access](https://www.idecsi.com/challenges/external-access-microsoft-365/) - [![download_done](https://blog.idecsi.com/hubfs/download_done.svg) Prevent Sensitive Data Exposure](https://www.idecsi.com/challenges/sensitive-data-m365/) - [![download_done](https://blog.idecsi.com/hubfs/download_done.svg) Gain visibility across Microsoft 365](https://www.idecsi.com/challenges/visibility-microsoft-365/) - [![download_done](https://blog.idecsi.com/hubfs/download_done.svg) Ensure regulatory compliance](https://www.idecsi.com/challenges/compliance-m365/) - Resources Is Your Tenant Ready for Copilot? 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IDECSI and SNCF have been working together since 2014 to protect messaging services. The customer of rail transport has since migrated a whole section of its operations and deployed Microsoft 365 collaboration tools with 170,000 users on the tenant. SNCF now uses the IDECSI solution to protect data in its various environments, including for security, monitoring, and detection. ### CHALLENGES Data protection on Microsoft 365 collaborative tools has become an important issue for companies.  SNCF has launched a project to secure its collaborative tools and has called on IDECSI to :  - Implemented large-scale permission review campaigns - Ensured governance of SharePoint sites - Increased owners’ risk awareness and maturity Discover how SNCF recertified millions of documents across its SharePoint sites in less than 4 months thanks to the [IDECSI's rights review solution](https://www.idecsi.com/challenge-rights-review/). ### "IDECSI helped us reduce usage problems and potential security flaws in the M365 tenant. Such a volume required a large-scale solution to review permissions and raise user awareness of data governance." *![Antoine Ancel-1](https://blog.idecsi.com/hs-fs/hubfs/Antoine%20Ancel-1.png?width=151&height=151&name=Antoine%20Ancel-1.png)    Antoine ANCEL - Director of Operational Cybersecurity * Best practices to improve Microsoft Teams security [![Download the infographic ](https://no-cache.hubspot.com/cta/default/4272098/825ad7d1-e961-4a7a-a6b3-6e380b22285f.png)](https://cta-redirect.hubspot.com/cta/redirect/4272098/825ad7d1-e961-4a7a-a6b3-6e380b22285f) Subscribe to our newsletter and receive new contents every month Our case studies These resources may interest you ![Cas client Rocher ](https://4272098.fs1.hubspotusercontent-na1.net/hubfs/4272098/Groupe%20rocher.png) Case-Study Groupe Rocher: Data Protection in M365 & Carbon Footprint Reduction [Read the case study](https://blog.idecsi.com/resources-customer/idecsi-case-study-group-rocher?hsLang=en) ![](https://4272098.fs1.hubspotusercontent-na1.net/hubfs/4272098/SUEZ.png) Case-Study Suez: Reducing Overexposure Risk and Data Volume on Microsoft 365 [Read the case study](https://blog.idecsi.com/resources-customer/idecsi-case-study-suez?hsLang=en) ![](https://4272098.fs1.hubspotusercontent-na1.net/hubfs/4272098/Lactalis.png) Case-Study Lactalis: Identifying and Eliminating Non-Compliant Sharing and Access to Reduce Risk [Read the case study](https://blog.idecsi.com/resources-customer/idecsi-case-study-lactalis?hsLang=en) ![Cas client BPCE ](https://4272098.fs1.hubspotusercontent-na1.net/hubfs/4272098/BPCE-1.png) Case-Study BPCE: Protection and Control of Shared Data on Microsoft 365 [Read the case study](https://blog.idecsi.com/resources-customer/idecsi-case-study-bpce-it?hsLang=en) ### Data protection, let's discuss your project?   [![Contact us](https://no-cache.hubspot.com/cta/default/4272098/bea4f372-c84f-4ec4-980c-ca663747fbfe.png)](https://cta-redirect.hubspot.com/cta/redirect/4272098/bea4f372-c84f-4ec4-980c-ca663747fbfe) ![video background](https://idecsi2a-dev-idecsi.pf27.wpserveur.net/wp-content/uploads/2022/02/video-background-idecsi-responsive-1.png) [![Logo-Idecsi-White-Ss-ES](https://blog.idecsi.com/hubfs/LOGOS%20IDECSI/LOGOS%20OFFICIELS/Logo-Idecsi-White-Ss-ES.svg)](https://www.idecsi.com/) +33 1 84 79 38 30 - - - - [Why choose IDECSI?](https://www.idecsi.com/user-security/) - [About us](https://www.idecsi.com/about-us/) - [Join the team](https://www.welcometothejungle.com/fr/companies/idecsi) - Solutions - [Visibility](https://www.idecsi.com/challenge-data-visibility/) - [Detection](https://www.idecsi.com/challenge-threat-detection/) - [User engagement](https://www.idecsi.com/challenge-involve-user/) - [Access review](https://www.idecsi.com/challenge-rights-review/) - [Remediation](https://www.idecsi.com/challenge-remediation/) - [Sensitive data](https://www.idecsi.com/challenge-sensitive-data/) - [Products](https://www.idecsi.com/solution/) - [MyDataSecurity](https://www.idecsi.com/solution/mydatasecurity/) - [Advanced Monitoring](https://www.idecsi.com/solution/advanced-monitoring/) - [MyDataManagement](https://www.idecsi.com/solution/mydatamanagement/) - Resources - [Resources & News](https://blog.idecsi.com/resources?hsLang=en) - [Blog](https://blog.idecsi.com?hsLang=en) - [Customer success](https://blog.idecsi.com/resources-customer) - [Extranet](https://extranet.idecsi.com?hsLang=en) © IDECSI