Collaboration Attack Surface Assessment
The Invisible Attack Surface
Organizations have invested heavily in securing data within the perimeter — across endpoints, networks, cloud infrastructure, and applications. Yet sanctioned external sharing through email has grown largely unmonitored, creating a collaboration attack surface that expands with every attachment sent.
The Solution: Comprehensive Attack Surface Visibility
eSHARE's Collaboration Attack Surface Report provides the first comprehensive view of an organization's email-based data exposure. With read-only permissions, eSHARE collects email audit events for the previous 10 days in the M365 tenant, identifies opportunities to reduce the email attack surface while improving the collaboration experience, and delivers an executive summary for stakeholder review.
Quantify Your Attack Surface
The Collaboration Attack Surface Score measures the average number of file copies created per external recipient — a single metric that captures the compounding nature of email-based data exposure.
- Below 1.0: Controlled External Sharing
- 1.0–2.0: Moderate Exposure
- Above 2.0: Significant Data Loss
What You Receive
- Attack Surface Score — a quantified measurement of data proliferation risk
- Executive Dashboard — metrics establishing the scale and scope of external sharing activity
- Remediation Roadmap — actionable, policy-based recommendations
- Data Analysis — detailed breakdowns across share types, labels, and domains
- Email Details — drill-down capability into specific communications
- Expert Consultation — a guided walkthrough to interpret findings and develop remediations