Microsoft 365 DSPM: Master your data exposure
Classified data exposed, ownerless groups, uncontrolled sharing… Your M365 tenant is accumulating invisible risks. IDECSI gives you a complete view of your real exposure and a prioritized action plan, within a few weeks.
80%
of data breaches involve collaborative files: emails, Teams, OneDrive, SharePoint.
Source: Gartner, DSPM Market Guide 2025
+48
DSPM control points analyzed on every M365 tenant by IDECSI
15 days
days to fix critical risks through a targeted DETOX remediation campaign
The reality of your M365 tenant: a degraded posture
CISOs and IT Directors face five structural challenges:
- Uncontrolled exposure of sensitive data: files classified Secret accessible via public groups or anonymous shares, without anyone knowing.
- Overly broad M365 permissions: admin rights, dangerous configurations, Full Access on individual mailboxes — the exposure surface is multiplied.
- Failing group governance: thousands of ownerless groups, with externals in sole charge, blurred responsibility, uncontrolled persistent access.
- Underestimated Exchange risks: external forwarding, Send As rights, calendar sharing, leakage vectors that often go unnoticed.
- Silent risk accumulation over time: without regular reviews, security debt keeps growing.
Regain control of your M365 exposure with three pillars
The IDECSI platform scans your M365 tenant across 38 control points and provides a contextual assessment of every risk:
- Centralized security posture dashboard (critical, major, minor risks)
- Identification of exposed classified files (Purview, classified secret/confidential)
- Mapping of public, ownerless, and external-facing groups
- Report on externals and their permissions
- Analysis of dangerous, critical sharing
- Detection of the most exposed VIP/VAP/VSP users
Associated benefit: full visibility over your data estate, know exactly where your sensitive and classified data is, who accesses it, how it’s shared, and since when.
IDECSI lets you launch remediation actions on two complementary levels:
- Bulk remediation by admins for critical or residual risks
- Targeted campaigns for data owners via MyDataSecurity, 3 dedicated journeys:
- Risk review on Teams, SharePoint, OneDrive, Outlook
- Recertification of external (guest) access
- M365 group review
Associated benefit: data owner accountability and operational risk prioritization, business teams fix their own risks via MyDataSecurity, IT keeps control, and a prioritized action plan stays directly actionable for your SOC, IAM, and governance teams.
Measure the gains achieved and track progress over time.
Associated benefit: security gains measurement and ROI, before/after dashboards, remediation rates, exposure reduction: you can prove the impact of your DSPM program.
What You Gain
Complete visibility into your data estate
Understand exactly where sensitive and classified data resides, who has acces to it, how it shared, and how long.
Accountability for data owners
Business users remediate their own risks through MyDataSecurity. IT maintains governance and oversight while data owners take responsibility for their data.
Operational risk prioritization
Access a prioritized action plan supported by continuous reviews, automated alerts, and external access recertification. Provide your SOC, IAM, and governance teams with actionable insights.
Measurable security outcomes and ROI
Track remediation rates, exposure reduction, and security improvements through before-and-after dashboards. Demonstrate the mesurable impact of your DSPM program.
DETOX for Microsoft 365
An operational framework designed to help you regain control of your data in just weeks, from assessment to measurable remediation.
- Comprehensive DSPM assessment (48 control points)
- Targeted remediation campaigns
- Sustainable governance and simplified oversight
They choose IDECSI
“These campaigns have enabled us to reduce our data exposure; 10,000 corrections have been made, and the target has been achieved. Users are satisfied with the solution’s user-friendliness and appreciate being at the heart of the process.”
Vincent Rey
Head of Data Protection Solutions
“Today, IDECSI represents an extension of our systems for controlling and monitoring access authorisations to our information assets.”
Eric Vautier
Group CISO
In just three months, the SUEZ Group has seen tangible results: a reduction in the attack surface and exposure, improved security, and the adoption of new governance rules in Teams and SharePoint.
Robin Foucault
RSSI
IDECSI and data security
Discover the most frequently asked questions about protecting your data:
No. The initial DSPM diagnostic takes a few weeks, and the first targeted remediation campaigns can produce measurable results on critical risks within 15 days.
Yes. IDECSI builds on your existing Purview classifications (secret/confidential classified files) to prioritize risks, without replacing your DLP tools.
The platform is designed for shared ownership: IT keeps control via the centralized dashboard, while data owners fix their own risks through targeted campaigns.
The diagnostic prioritizes risks by severity (critical, major, minor), letting you focus remediation effort on critical risks first, without waiting to address everything at once.
15 Warning Signs Your M365 Data Is at Risk
Use this checklist to:
- Instantly spot the configurations putting your data at risk
- Know exactly which sensitive data is exposed — and to whom
- Get a clear starting point, without a lengthy audit
