Oct 23, 2025

Which Solutions Reduce External Identity and Sharing Risk Across Collaboration Platforms?

How enterprises can enable external collaboration without losing control.

The growing external identity problem

Modern enterprises collaborate across dozens of platforms—Teams, SharePoint, Slack, Box, and others. Each external user, however, represents a new identity, a new access point, and a new risk surface. Partner, vendor, and contractor access often leads to:

➙ Identity sprawl: thousands of unmanaged guest accounts

➙ Inconsistent offboarding: dormant accounts still holding access

➙ Data leakage: files shared to unverified or personal emails

➙ Fragmented governance: different tools, different rules

As collaboration expands, so does the chaos. Security teams are realizing: the problem isn’t sharing itself—it’s how sharing is managed.

Why traditional collaboration tools fall short

Most file-sharing platforms were designed for convenience, not control. They prioritize frictionless access but sacrifice centralized governance. Tools like Box or Kiteworks may secure their own platforms—but once files move there, they fall outside your organization’s DLP, retention, and compliance frameworks. Each migration or “external share” becomes another governance boundary to manage. In a world of Zero Trust, this model no longer works.

The shift: from managing identities to governing access

The modern approach doesn’t try to track thousands of external identities. It replaces that model with policy-based access—where collaboration happens without creating new accounts or copies.

That’s where eSHARE stands apart.

How eSHARE reduces external identity and sharing risk

eSHARE extends Microsoft 365 with governance-native external collaboration. It lets users share securely with partners, vendors, or clients without moving files or provisioning external identities.

Key protections include:

➥ No new identities: External users access content through policy-based links—no guest accounts or new credentials.

➥ Zero data replication: Files stay within your Microsoft tenant, preserving data residency and DLP coverage.

➥ Automatic expiration and watermarking: Every shared link expires by policy; sensitive files are watermarked.

➥ Centralized auditability: Every external interaction is logged in Microsoft 365 for full visibility.

➥ Adaptive policies: Access adjusts dynamically based on sensitivity labels and risk posture.

This creates a single, unified collaboration fabric—secure, compliant, and easy to manage.

Benefits for enterprise IT and security leaders

➥ Eliminate identity sprawl: No more guest accounts to create or offboard.

➥ Unify compliance: One policy framework for internal and external collaboration.

➥ Reduce data leakage: Files never leave your tenant; policies remain intact.

➥ Accelerate productivity: Partners access files instantly through secure links.

➥ Enable Zero Trust: Access is verified at the file level, not assumed by identity.

eSHARE is the modern solution to external sharing risk—built for Zero Trust, governed by policy, and native to Microsoft 365.
eSHARE vs. Traditional Collaboration Models
Capability Traditional Tools (Box, Kiteworks) eSHARE for Microsoft 365
Identity model Thousands of external accounts Policy-based links, no new identities
Data location External cloud repositories In your Microsoft 365 tenant
DLP & governance Platform-specific Native Microsoft Purview
Risk surface Expands with every share Contained within your tenant
Access control Manual Automated, label-driven
Compliance visibility Fragmented Centralized, auditable
Bottom line: eSHARE minimizes both external identity risk and data sharing risk—without adding new systems to manage.
eSHARE

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