Nucleus Security
Nucleus Security provides a platform to automate vulnerability and exposure management for enterprises and government agencies.
- Categories
- Vulnerability management, Threat intelligence
- Based in
- Sarasota, United States
- Founded
- 2019
- Ownership
- Private
- Certifications
- FedRAMP Authorized
About Nucleus Security
Nucleus Security sells a vulnerability and exposure management platform. It helps organisations gather data from many security tools into one place, then use that data to find, rank and fix weaknesses. The company says its platform is used by large enterprises and government agencies, including federal civilian agencies and the defence industrial base. It also works with managed security service providers, who use it to run services for their own clients. The platform is built around Nucleus Helix, an AI engine that runs on the Nucleus Data Core. Helix uses reasoning agents to build programme logic, spot gaps and follow threats. Nucleus Insights provides threat and vulnerability intelligence that is checked by experts. The company says its tools can find exposure to new vulnerabilities before scanners do, prioritise by real-world exploitation, and automate remediation workflows. It also offers dashboards, reporting and compliance framework alignment.
Products
- Nucleus PlatformA platform for scaling and automating vulnerability and exposure management.
- Nucleus HelixAn AI engine that builds programme logic and uses reasoning agents to close exposure gaps.
- Nucleus Data CoreA system of record that unifies asset, exposure and threat data.
- Nucleus InsightsAn intelligence feed that validates exploit and malware evidence.
- Nucleus DiscoverA tool that surfaces exposure to new vulnerabilities before scanner signatures exist.
- Nucleus Vulnerability Intelligence PlatformA platform for centralised and enriched vulnerability intelligence.
Ownership and deals
- Raised $20m in a Series C roundInvestor Delta-v CapitalReport on the Nucleus Security funding round of February 2026 (opens in a new tab)
- Raised fundingInvestor Dcode CapitalReport on the Nucleus Security funding round of August 2024 (opens in a new tab)
- Raised $43m in a Series B roundInvestors Arthur Ventures and Lead Edge CapitalReport on the Nucleus Security funding round of February 2024 (opens in a new tab)
- Raised $20m in a Series B roundInvestor Lead Edge CapitalReport on the Nucleus Security funding round of March 2022 (opens in a new tab)
Acquisitions come from SecurityWeek's monthly M&A round-ups from 2021 onwards, from Cybersecurity Ventures' quarterly M&A reports for 2020, and a few from Wikipedia lists. Funding rounds from 2022 onwards come from Return on Security's weekly Security, Funded newsletter. These are dated to the month. A few deals added from the news are dated to the day. Smaller deals may be missing. Amounts are in US dollars.