David Weston leads Agentic Security at Microsoft, where he builds the AI models, autonomous agents, and evaluation systems redefining how defenders operate. At Microsoft since the Windows 7 era, he has worked across exploit mitigation design, malware analysis, APT research, and led security engineering for Windows, Xbox, Azure OS, and Microsoft's Offensive Security Research & Engineering group. His current work is leading teams training frontier security models, agentic security systems for defenders, and pushing AI-driven vulnerability discovery through Microsoft's Multi-Model Agentic Scanning Harness (MDASH). A longtime member of the research community and former CISA technical advisor, David is a regular presenter at BlueHat, Black Hat, and DEF CON.

 

Key areas Dave can discuss:

• The vision behind Project Perception
• How AI is changing the economics of cyber offense and defense
• Lessons learned from building MDASH and Microsoft's AI security initiatives
• Security-first AI development and deployment
• What's next for defenders as agentic systems become mainstream

 

This will be a TEXT-BASED AMA, so ask your questions in the comment section down below and David will be answering via comment replies during the live hour!