HiddenLayer
HiddenLayer is a cybersecurity company specializing in AI Security, founded in 2022 and headquartered in Austin, United States. It has raised $156.25M in equity across 3 priced rounds, employs about 169 people, and is privately held.
updated Sep 9, 2026
Latest HiddenLayer news and company activity
What HiddenLayer did, dated — selected moves from the record, one per kind, newest first.
- Sep 2026Mega roundHiddenLayer nabs $100M as enterprises rush to secure their AI deployments
- Aug 2026RecognitionHiddenLayer Recognized on Gartner Peer Insights
- Aug 2026Exec changeHiddenLayer Welcomes Mike Gesnaldo as Chief Revenue Officer
- Aug 2026Product launchHiddenLayer Introduces Agent Harness Security for AI Coding Agents
HiddenLayer Momentum score
53/ 100
Mandos Momentum blends hiring, funding, traffic and sentiment into one score out of 100. The score is free; the pillars behind it unlock in the platform.
HiddenLayer funding
HiddenLayer has raised $156.25M in priced equity. Its most recent round was a Series B in September 2026.
- Equity raised
- $156.25M3 priced rounds
- Last round
- Series BSep 2026
HiddenLayer employees and hiring
HiddenLayer has about 169 employees, up 1% over the last 30 days, with 14 open roles.
- Employees
- 169
- 30-day change
- +1%
- Open roles
- 14
HiddenLayer competitors
Security professionals most often compare HiddenLayer against OPAQUE, Reach Security, and Zenity on cybersectools.com. 1 more is in the platform, with overlap scoring.
by search demand for comparison pages on cybersectools.com, 90 days
The other 440 data points.
- Funding historyevery round, every investor named
- Headcount growthvelocity, departments, seniority
- Open jobs14 live postings, role mix
- Tech stackframeworks, clouds, security
