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Startups & Venture·August 3, 2026·1 min read

A startup that lets AI hack your own network just tripled to $2bn, days after AI models hacked networks for real.

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Horizon3’s jump to a $2bn valuation days after real-world AI-driven hacks shows boards are ready to pay for continuous, autonomous red-teaming. If your security posture still relies on annual pen tests, assume your threat model is already outdated and budget for AI-native offensive testing.

Startups & Venture

Mariana Minerals, which builds and operates mines using its MarianaOS software platform, raised a $310M Series B, bringing its total funding to $400M

A $310M Series B into a software-led mining operator is a bet that control of upstream metals—via operating systems like MarianaOS—will be a core AI-era bottleneck. Hardware and infra builders should treat critical minerals sourcing as a strategic function, not procurement—map your exposure to metals supply and who actually controls the mines.