How much funding has Nucleus Security raised?

Nucleus Security has raised $86.1M in total. Its most recent round was a Series C in February 2026.

How many people work at Nucleus Security?

About 123, up 3% over the last 30 days, with 4 open roles.

Who are Nucleus Security's competitors?

Cyware, Tenable, and Rapid7 are among the closest in Threat & Vulnerability Management. The full competitive set, with overlap scoring, is in the platform.

Nucleus Security

Threat & Vulnerability ManagementSarasota, United Statesfounded 2018private

Nucleus Security is a cybersecurity company specializing in Threat & Vulnerability Management, founded in 2018 and headquartered in Sarasota, United States. It has raised $86.1M in total funding, employs about 123 people, and is privately held.

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updated Aug 22, 2026

The record

What Nucleus Security did, dated.

Aug 2026RecognitionNucleus Security Named Finalist for Two Cyber Defense Magazine Innovation Awards
May 2026RecognitionNucleus Security Earns Two GOVIES Government Security Awards from Security Today
Feb 2026Feature launchNucleus Security Adds EOL Tracking and Calculation
Feb 2026Funding roundNucleus Security Secures $20M Series C Funding

Momentum

54 out of 100.

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Products

What Nucleus Security sells.

Nucleus Vulnerability Intelligence PlatformCentralized vuln intelligence platform with aggregation and risk prioritizationDetails ↗

In the platform

The other 440 data points.

Funding historyevery round, every lead investor
Headcount growthvelocity, departments, seniority
Open jobs4 live postings, role mix
Tech stackframeworks, clouds, security

Similar in Threat & Vulnerability Management

FAQ

Common questions about Nucleus Security.

How much funding has Nucleus Security raised?: Nucleus Security has raised $86.1M in total. Its most recent round was a Series C in February 2026.
How many people work at Nucleus Security?: About 123, up 3% over the last 30 days, with 4 open roles.
Who are Nucleus Security's competitors?: Cyware, Tenable, and Rapid7 are among the closest in Threat & Vulnerability Management. The full competitive set, with overlap scoring, is in the platform.