Horizon3.ai

Autonomous penetration testing that exploits and verifies weaknesses in live environments.

Horizon3.ai's NodeZero runs continuous, self-service penetration tests against internal and external environments, chaining real exploits to prove which weaknesses are actually reachable. Teams receive verified attack paths and fix guidance instead of raw scanner output. The company was founded in 2019 by offensive security practitioners from military and industry backgrounds.

Category: Pentesting & Offensive Security
Founded: 2019
Funding: $178M raised (Venture Round, 2026)
Website: https://www.horizon3.ai

Seen at Black Hat USA 2026 (Gold sponsor, booth 4357).

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