Glenn Chisholm is Co-Founder, Chairman and Chief Product Officer at Obsidian Security, a leader in SaaS security and posture management serving Fortune 500 companies. He is also an Operating Partner at SYN Ventures, investing in cybersecurity innovators.

Glenn served as CTO at Cylance, leading product strategy and research teams before its $1.4 billion acquisition by Blackberry in 2019. Prior to Cylance, he was CISO and Director of Security Operations at Telstra, securing the $50 billion telecommunications provider across the Asia-Pacific region.

Glenn holds multiple patents in security and data science and earned his MBA from Melbourne Business School. He serves on the boards of Delphos Labs, Miggo, SquareX, and Obsidian Security, and is a member of the Executive Committee at UC Irvine's Cybersecurity Research Institute.

Obsidian Security raised $119.5 million in total funding, including a $90 million Series C in 2022 led by Menlo Ventures, IVP, and Norwest. The company experienced 5x growth in deals over $100,000 and now serves Global 2000 companies.

Obsidian Security, founded in 2017, pioneered the SaaS Security Posture Management category and protects business-critical applications like Salesforce, Workday, Microsoft 365, and Google Workspace. The company has expanded globally with data centers in EMEA and APAC and launched AI Agent Security solutions in 2025.