Most modern security breaches no longer start on the network. They start in the browser. Engineers paste sensitive code into AI tools. Users approve malicious OAuth apps. Stolen SaaS session tokens bypass MFA and grant attackers' direct access to enterprise data. The common factor is not malware or lateral movement. It is trusted browser activity being abused.

This session explains why the browser has become the most important control point for Zero Trust in a SaaS and AI driven world. Using real security incidents, we break down how common compromises occur in the browser and map them to MITRE ATT&CK techniques that practitioners already use for detection and response.

You will learn practical ways to reduce SaaS and GenAI risk using in browser DLP, tenant restrictions, OAuth consent governance, and session level telemetry without destroying productivity. This talk focuses on how these controls actually work in practice, what they stop, and where they fail.

If you design, deploy, or operate Zero Trust controls, you will leave with a clear mental model for treating the browser as a first-class security boundary rather than a blind spot.