Horizon3 builds autonomous security operations and penetration testing platforms for enterprise security teams.
Undisclosed
Investor undisclosed
All funding news
Horizon3
Horizon3 builds autonomous security operations and penetration testing platforms for enterprise security teams.
Rounds tracked
2
Funding history
Horizon3 builds autonomous security operations and penetration testing platforms for enterprise security teams.
$250MSeries E
Investor undisclosed
A $250M Series E in cybersecurity signals that enterprise security buyers are still willing to deploy massive capital on point solutions—especially if they solve a specific, painful problem at scale. At this stage and size, Horizon3 is likely consolidating market share and building out go-to-market muscle rather than proving product-market fit, which means the category itself isn't heating up, but winners are pulling away. If you're building adjacent enterprise infrastructure (compliance, identity, cloud security), watch whether they're acquiring or hiring aggressively—that tells you if they're filling gaps or just optimizing margins.
Want a deeper look at Horizon3?
Ask Dormy who's likely on their cap table, what kind of companies their lead investor backs, and how to reach them.