Mark Hatfield is a Founder and General Partner who helped pioneer a venture model focused exclusively on cybersecurity, positioning him as one of the original specialist VCs in the sector rather than a generalist who also does security. He is frequently cited as an authority on protecting AI and machine learning models themselves from threats like data poisoning and adversarial attacks, which he frames as a distinct and emerging security category beyond traditional infrastructure protection.
About their Fund
Ten Eleven Ventures
Sectors
Cybersecurity, AI, Data, Fintech, Web3 / Crypto
Rounds
Seed - Series B+
Avg Check Size
$3M - $15M
Notable Investments
Ten Eleven Ventures is the first venture capital fund created to focus exclusively on cybersecurity across all stages and geographies, built around founder Alex Doll's experience scaling ArcSight from startup through acquisition by HP. The fund differentiates itself by investing in "defending AI" systems and privacy/device management technologies while operating as a platform for the cybersecurity community through technical coaching and curated retreats that bring together portfolio founders with senior security professionals.
Notable Fund
Investments
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Active in
Rounds
Avg. Check
Links
Deeptech / Hardware
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Robotics
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12
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7
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Deeptech / Hardware
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2
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Unknown
~$750K
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Fintech
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Unknown
Pre-Seed - Series A
Unknown
$250K-$1M
Unknown
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