Microsoft 365 DSPM: Master your data exposure
Exposed classified data, ownerless groups, uncontrolled sharing… Your M365 tenant may be accumulating hidden risk. IDECSI provides a comprehensive view of your actual exposure and delivers a prioritized remediation plan, in just weeks.
80%
of data breaches involve collaborative content, including email, Teams, OneDrive, and SharePoint.
Source: Gartner DSPM Market Guide 2025
+30
DSPM control points analyzed across every M365 tenant by IDECSI.
15 days
to address critical risks through a DETOX remediation campaign.
The reality of your M365 tenant: A degraded security posture
As data sharing, permissions, and configurations evolve, your M365 attack surface continues to grow. CISOs and IT leaders face five structural challenges:
- Uncontrolled exposure of sensitive data: classified or confidential files may be accessible through pubic gruops or anonymous sharing links, often without anyone realizing it.
- Excessive permissions across M365: Administrative privileges, risky configurations, and Full Access mailbox permissions significantly increase exposure.
- Weak group governance: Thousands of groups without owners, or managed exclusively by external users, create accountability gaps and persistent access risks.
- Underestimated exchange risks: External forwarding, Send As permissions, and calendar sharing remain common but often overlooked vectors for data leakage.
- Silent risk accumulation: Without regular reviews, security debt continues to grow over time.
Regain control of your M365 exposure with three pillars
The IDECSI platform analyzes your entire M365 tenant across 38 DSPM control points, including:
- Centralized security posture dashboard (Critical, Major, and Minor risks)
- Discovery of exposed classified files (Microsoft Purview labels: Secret / Confidential)
- Mapping of public groups, ownerless groups, and groups containing external users
- Reporting on external users and their permissions
- Identification of dangerous or critical sharing activities
- Visibility into the most exposed VIPs, VAPs, and sensitive user populations
IDECSI provides contextual risk assessment aligned with your internal security policies:
- Automatic critical / major / minor classification based on actual business impact
- Dynamic risk escalation when classified data is involved
- Operational DSPM summaries highlighting prioritized critical risks
- BI-ready reports for SOC, IAM, and governance teams
- Identification of affected users and resources to accelerate remediation
- Detection and alerting of critical risks
IDECSI enables remediation at two complementary levels:
Administrator-led remediation Bulk remediation capabilities for critical and residual risks.
User-driven remediation with MyDataSecurity
Targeted campaigns helping data owners review and correct risks through three dedicated workflows:
- Teams, SharePoint, OneDrive, and Outlook risk reviews
- External access recertification (Guests)
- M365 group reviews
Track improvements and measure progress over time.
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 (38 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
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
