Nucleus Security
Nucleus Security is a cybersecurity company specializing in Exposure & Vulnerability Management, founded in 2018 and headquartered in Sarasota, United States. It has raised $86.1M in equity across 5 priced rounds, employs about 129 people, and is privately held.
#7Exposure & Vulnerability Management Pacesetter· Q3 2026updated Oct 17, 2026
Latest Nucleus Security news and company activity
What Nucleus Security did, dated — selected moves from the record, one per kind, newest first.
- Oct 2026RecognitionNucleus Security Named 2026 Top InfoSec Innovator
- Aug 2026Product launchNucleus Security Announces Nucleus Helix, AI Engine for Exposure Management
- May 2026Exec changeDepartures: Public Sector and Channel Marketing Director and VP of CX Operations
- Feb 2026Funding roundNucleus Security Secures $20M Series C Funding
Nucleus Security Momentum score
73/ 100climbing
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.
Nucleus Security funding
Nucleus Security has raised $86.1M in priced equity. Its most recent round was a Series C in February 2026.
- Equity raised
- $86.1M5 priced rounds
- Last round
- Series CFeb 2026
Nucleus Security employees and hiring
Nucleus Security has about 129 employees, up 1% over the last 30 days, with 8 open roles.
- Employees
- 129
- 30-day change
- +1%
- Open roles
- 8
Nucleus Security competitors
Security professionals most often compare Nucleus Security against Seconize, Airrived, and ThreatDown by Malwarebytes on cybersectools.com. 7 more are in the platform, with overlap scoring.
ranked by CybersecTools comparison demand, 90 days
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Nucleus Security CISO Score
How Nucleus Security reads to a CISO buyer: seven dimensions of the Mandos Framework, scored through the eyes of a security buyer.
