Former Microsoft and Tesla security leaders emerge with $35 million for Pi
The startup analyzes code, cloud infrastructure and workplace communications to identify real threats.
Israeli-American cybersecurity startup Pi has raised $25 million in a Series A funding round led by Third Point Ventures. To date, the company has raised approximately $35 million, including a $10 million Seed round completed in early 2025 and led by Brightmind Partners.
The latest round also included participation from George Kurtz, as well as Yevgeny Dibrov and Nadir Izrael.
Pi was founded in 2025 by Guy Arazi, who serves as CEO, and Yoni Ramon, the company's CPO. Both founders come from the worlds of security research and offensive cybersecurity, with extensive experience protecting large-scale systems.
Before founding Pi, Arazi worked as a security researcher at Microsoft, where he developed security defenses and vulnerability detection capabilities for Microsoft Defender, Azure, and the Microsoft Security Response Center (MSRC). Earlier in his career, he was part of the team that helped establish XCloud at Palo Alto Networks.
Ramon led offensive security activities at Tesla for more than a decade, overseeing security projects for the company's vehicles and robotics programs across the United States, Europe, and China. He also gained experience in systems engineering at SpaceX and participated in projects at other companies associated with Elon Musk, including the acquisition of Twitter.
The company operates from offices in San Francisco and Tel Aviv and currently employs approximately 23 people.
Pi's platform functions like a security engineer with deep knowledge of an organization's development environment, analyzing everything from design documents, source code, and cloud infrastructure to discussions in Slack and Microsoft Teams, as well as previous security incidents and how they were resolved.
By incorporating this broader context, the platform aims to distinguish between vulnerabilities that pose genuine risk and false positives, a challenge that tools focused solely on code analysis often struggle to address.
"If even the most powerful, best-resourced organizations on earth keep chasing the same recurring vulnerabilities across their code and infrastructure, the problem has no real solution today. That's why we started Pi," said Arazi. "Models like Anthropic's Claude-Mythos can now uncover security flaws at a scale no human team can match, but that's only half the equation for defenders. Pi enables organizations to remediate vulnerabilities as quickly as they can be identified."
