phishing
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Kevin Tian
Kevin Tian is the co-founder and CEO of Doppel, an AI-native social engineering defense platform that scans the internet for impersonation campaigns and shuts them down automatically. A Georgetown grad who built dispatch systems and flying-car software at Uber and Lyft, he started Doppel in 2022 after spotting social engineering becoming the top source of breaches and cyber-insurance claims. Doppel raised a $70M Series C in November 2025 at a $600M+ valuation, backed by Bessemer, a16z, CrowdStrike CEO George Kurtz, and a bench of WNBA stars.
Material Security
Material Security is a San Francisco cloud workspace security company that protects email, files, and accounts inside Google Workspace and Microsoft 365. Founded in 2017 by three ex-Dropbox engineers, it assumes attackers will eventually get in - and locks down the sensitive data they came for, instead of stacking yet another perimeter.
Xing Xin
Xing Xin is the CEO and Co-Founder of Upfort (formerly Paladin Cyber), a San Francisco-based platform that unifies cybersecurity and cyber insurance into a single solution for small and medium-sized businesses. With a background in management consulting, AI startups, and a childhood spent building computers for neighbors, Xin co-founded Upfort after watching a close friend's accounting firm get destroyed by ransomware in 2017. Under his leadership, Upfort now serves over 25,000 companies, has processed more than $100M in cyber insurance premiums annually, and has been shown to reduce the likelihood of security incidents by 81%.
Abhishek Agrawal
Abhishek Agrawal is the Co-Founder and CEO of Material Security, a San Francisco-based cybersecurity company that pioneered zero-trust protection for cloud email and collaboration environments. A Princeton-trained engineer who attended college at 16 and later earned his MBA from Harvard Business School as a Baker Scholar (top 5%), Agrawal co-founded Material Security in 2017 alongside former Dropbox colleagues Ryan Noon and Chris Park, inspired by the 2016 John Podesta email breach. Under his leadership, Material Security reached unicorn status ($1.1B valuation) after a $100M Series C in May 2022 led by Founders Fund, with backing from Andreessen Horowitz, Elad Gil, and Snowflake Ventures. The platform protects organizations like OpenAI, Anthropic, Reddit, Lyft, Roblox, and DoorDash against email-based threats and data loss in Google Workspace and Microsoft 365.