Guy Arazi is Co-Founder and CEO of Pi, an agentic AI product security platform that automates software vulnerability identification and remediation from design through deployment.

Guy previously served as a security researcher at Microsoft, building defenses and vulnerability detection capabilities for Microsoft Defender, Azure, and the Microsoft Security Response Center (MSRC), and earlier helped establish XCloud at Palo Alto Networks.

Guy co-founded Pi after recognizing that even the most powerful organizations keep chasing the same recurring vulnerabilities, a problem he saw as having no real solution with existing tools.

Guy co-founded Pi in 2025 alongside Yoni Ramon, combining his offensive security research background with a mission to give defenders the velocity advantage through agentic AI.

Pi has raised $35M in total funding, counts a leading AI lab, major social network, and cybersecurity firms among its customers, and has helped clients cut vulnerability triage time by up to 80%.