HiddenLayer
Total AI Security
About HiddenLayer
HiddenLayer is an Austin-based AI security company founded in 2022. Its platform protects AI models, applications, and agents from threats such as prompt injection, model tampering, data poisoning, and malicious code. The company covers the full AI lifecycle, including AI discovery, supply chain security, attack simulation, and runtime protection.
As per the company, they signed more than 50 new platform customers in the past year across banking, insurance, pharmaceuticals, airlines, technology, government, and defense. Its customers include Fortune 100 companies, while its government work includes the U.S. Department of Defense and intelligence community. The company also shared that its annual recurring revenue grew more than 10x over the past year, with more than 90% of that growth coming from new customers.
Founders
Funding History
Frequently Asked Questions
What does HiddenLayer do?
HiddenLayer provides AI security technology designed to protect AI models, applications, agents, and supporting infrastructure from security threats.
When was HiddenLayer founded?
HiddenLayer was founded in 2022.
Who founded HiddenLayer?
HiddenLayer was founded by Christopher Tito Sestito, Tanner Burns, and James Ballard.
How much funding has HiddenLayer raised?
HiddenLayer has raised approximately $156 million in disclosed equity funding across its Seed, Series A, and Series B rounds. It also received a separate $1.25 million SBIR award.
When did HiddenLayer raise its Series B?
HiddenLayer announced its $100 million Series B on 2 September 2026. The round was led by Delta-v Capital, with participation from Ten Eleven Ventures, Morgan Stanley, M12, and Booz Allen Ventures.
What is HiddenLayer's valuation?
HiddenLayer has not publicly disclosed an official valuation for its Series B round announced on 2 September 2026. Its valuation is therefore listed as undisclosed.
Where is HiddenLayer headquartered?
HiddenLayer is headquartered in Austin, Texas, USA.
How many employees does HiddenLayer have?
HiddenLayer has approximately 125 employees as of September 2026.
