Your AI agents just became a $2.83B attack surface. Microsoft is funding the firewall.

HiddenLayer just closed $100M Series B.

Three years ago, nobody could name a real AI attack at scale.

Today their ARR grew 10x in 12 months. 90% of that from new customers.

Gartner says enterprises will spend $2.83 billion securing AI this year. That's 83% more than 2025. Next year it hits $4.78 billion.

The investors tell you who's scared. Microsoft's M12. Booz Allen Hamilton. Morgan Stanley. These aren't seed-round tourists. They're putting money down because their own customers are getting hit.

HiddenLayer's CEO says they now scan 50 different AI file frameworks looking for models pretending to be something they're not. Hidden models inside of models. Open-source components that aren't what they claim.

Financial services and large tech are the biggest verticals. One customer is a "leading frontier model provider with 700M+ weekly users." DoD and intelligence community are also buying.

The real signal isn't the funding. It's that AI runtime security just became the new EDR.

Cisco, Palo Alto, and Check Point are already buying their way in. The question isn't whether your AI stack needs protection. It's whether you're buying or getting acquired.

Audit your AI supply chain today. Every model, every agent, every tool. If you can't verify what's running, you're already exposed.