Legba is built by people who have lived both sides of the breach.
Hackers. Bankers. Builders.
We have led red teams, locked down enterprises, and financed the founders building tomorrow's infrastructure. From security labs to boardrooms, we have seen how attacks start and how to stop them. Now we are securing the layer everyone overlooks: the browser.
Co-Founder & CTO
Phillip Williams is a Google Hall of Fame hacker and veteran security engineer. He has discovered critical vulnerabilities across global platforms and holds multiple patents in streaming and microservice infrastructure. He has founded and scaled several cybersecurity startups and built systems that protect millions of users worldwide. At Legba, he leads architecture and product innovation, designing technology that makes isolation fast, invisible, and secure.
Co-Founder & CEO
Phillip Pipkins is a former venture capitalist and Silicon Valley Bank executive with a background across banking, fintech, and early-stage investing. He has advised and funded founders nationwide and helped build financial strategies for leading technology companies. At Legba, he leads business strategy, partnerships, and growth, bringing the operational discipline of finance to the speed of cybersecurity.
Chief Information Security Officer
Anthony Castillo is a veteran cybersecurity executive with over three decades of experience securing carrier-class infrastructure and mission-critical systems. His career spans commercial, financial, and government environments where failure has real-world consequences. Prior to Legba, Anthony served as Chief Information Security Officer at Modria, Inc., an online dispute-resolution platform spun out of PayPal and eBay and later acquired by Tyler Technologies (NYSE: TYL). He has worked with Fortune 500 companies, global financial institutions, and U.S. national security agencies, including the NSA, FBI, and Department of Homeland Security. At Legba, Anthony leads security assurance and risk strategy, ensuring the company's technologies hold up under sustained, real-world adversarial pressure at scale.