Horizon3.ai raises $250M at $2B-plus valuation for autonomous pentesting
Autonomous security solutions startup Horizon3.ai Inc. today announced it has raised $250 million in a Series E round on a valuation of more than $2 billion to…
Senior writer · SiliconANGLE
Duncan Riley
Senior writer, SiliconANGLE. Builder since 1995, writer since 2003.
Senior writer at SiliconANGLE, covering startups, cybersecurity, and AI.
Duncan Riley is a senior writer at SiliconANGLE, covering startups, cybersecurity, and artificial intelligence. He has written about the tech industry for two decades, with earlier work at TechCrunch and as founder of The Inquisitr. He co-founded the b5media blog network in 2005 and has been building on the web since 1995. Based in Chiang Mai.
Latest writing
Exclusive: Terra Security’s Prevention writes the firewall rules to block proven exploits
Offensive security startup Terra Security Inc. today launched Prevention, a feature that writes the firewall rules needed to block an attack its artificial intelligence agents…
Cato Networks launches Agentic Threat Prevention to counter AI-assisted attacks
Networking and security company Cato Networks Ltd. today introduced Cato Agentic Threat Prevention, a capability that uses autonomous agents to predict the route an attacker…
CrowdStrike finds AI systems under direct attack as exploit windows shrink
Artificial intelligence has become a target for attackers rather than only a tool they use, according to CrowdStrike Holdings Inc.’s “2026 Threat Hunting Report,” released…