Onyx Security
Onyx Security is a cybersecurity company specializing in AI Security, founded in 2024 and headquartered in Tel Aviv, Israel. It has raised $153M in equity across 3 priced rounds, employs about 83 people, and is privately held.
updated Sep 9, 2026
Latest Onyx Security news and company activity
What Onyx Security did, dated — selected moves from the record, one per kind, newest first.
- Sep 2026RecognitionOnyx Security Named to Forbes Israel's Next Billion Dollar Startups List
- Jul 2026Mega roundOnyx Security Announces Advanced AI Control Layer with TCV Investment
- Jun 2026Feature launchOnyx Security Integrates with Claude Compliance API
- Jan 2026Exec changeMark Loewenstein joined as VP of Marketing
Onyx Security Momentum score
42/ 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.
Onyx Security funding
Onyx Security has raised $153M in priced equity. Its most recent round was a Series B in July 2026.
- Equity raised
- $153M3 priced rounds
- Last round
- Series BJul 2026
Onyx Security employees and hiring
Onyx Security has about 83 employees, up 1% over the last 30 days.
- Employees
- 83
- 30-day change
- +1%
- Open roles
- 0
Onyx Security competitors
Security professionals most often compare Onyx Security against Aiceberg, Zenity, and Runlayer on cybersectools.com. 6 more are 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 jobslive postings, hiring pace, role mix
- Tech stackframeworks, clouds, security
