deepfakes
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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.
Kevin Guo
Kevin Guo is the Co-Founder and CEO of Hive, a San Francisco-based enterprise AI company that built what may be the world's largest human-labeled training dataset - over 1 billion labeled items - and deployed those models as cloud APIs used by Reddit, BeReal, and more than 15 of the top social platforms for content moderation. A Stanford triple-degree graduate (biology BA, mathematical/computational sciences BS, computer science MS), Guo co-founded Kiwi - a social Q&A app that grew to 100 million users - before pivoting that team into Hive in 2017. Hive reached unicorn status with a $2 billion valuation after its $85 million Series D in April 2021, and Guo has become one of the most prominent voices on AI-generated content detection and the fight against deepfakes.
Jason Risch
Jason Risch is a Partner at Greylock Partners, one of Silicon Valley's most storied venture firms, where he bets early on founders reshaping cybersecurity and artificial intelligence. A Stanford math-and-statistics graduate who grew up tracking baseball statistics in Marin County, Risch cut his professional teeth at McKinsey, Opendoor, and Andrew Ng's AI Fund before joining Greylock in 2019. He approaches every investment like an applied statistician - 'shifting the distribution to increase a founder's odds of success' - and has backed breakout companies including Wiz, Cribl, LlamaIndex, Kodem, and Blockaid.