Horizon3 triples its valuation to $2B on a $250M Series E
Horizon3 raised $250M at a $2B valuation — roughly triple its $650M mark 14 months ago — with Qualcomm, defense contractor SAIC, and Singapore's EDBI joining returning investors NightDragon and NEA. The demand is revenue-backed rather than narrative: its NodeZero platform neared $100M ARR last year at 120% growth across about 7,200 customers. The buying pattern is shifting, with continuous scanning of the whole network displacing the annual human engagement that samples 2-3% of infrastructure.
Source: techcrunch.com ↗
It can test live systems without shutting down operations, a capability other AI-powered tools have struggled to deliver reliably, and it scans an entire infrastructure continuously rather than once a year, examining the full network rather than just 2-3%.
Why this matters
- → AI-powered continuous security testing replacing annual spot-checks, closing a major vulnerability window.
- → Enterprise demand surging as AI attacks accelerate; Horizon3 hit $100M ARR with 120% growth.
- → Defense + chip makers backing the platform signals breach risk spans critical infrastructure.