Microsoft announced Edge for Business updates at RSAC 2026 to prevent shadow AI data leaks, enforce Purview DLP and Outlook web protections, expand AI browsing controls (Agent Mode, multi-tab reasoning), integrate security connectors, and extend mobile reporting for enterprise browser security.
Microsoft announced expanded Edge for Business protections at RSAC 2026. The updates focus on preventing shadow AI data leaks and enforcing browser-based data protection.
Main feature/change and impact
Edge for Business adds Purview inline DLP for AI prompts and uploads, plus agentic controls. Prompts are scanned in real time and blocked or audited if sensitive data appears. Blocked prompts show policy notifications and can redirect users to Microsoft 365 Copilot. These changes reduce data exfiltration risk from consumer GenAI tools without banning AI use.Practical implications
IT teams can enforce sensitivity labels and DLP in Outlook on the web and AI browsing. Agent Mode is IT-enabled, constrained to approved sites, and shows visual indicators for actions. Multi-tab reasoning analyzes up to 30 tabs under existing DLP rules. Security connectors extend telemetry and policy enforcement to third-party platforms and mobile reporting.“Agent Mode does not have access to saved passwords or payment methods.”Enterprises must review Edge management settings and Purview policies immediately. Enable “Protect labeled content in Microsoft 365 online” to apply label enforcement in Edge. Validate connector configurations for Clever, Devicie, and Trellix where applicable. Monitor audit logs and adjust DLP rules to balance productivity and protection. Microsoft’s updates shift browser security toward integrated, AI-aware controls. Organizations should prioritize configuration, testing, and user guidance to prevent shadow AI risks.
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From the Windows Blog
