Censys maps internet infrastructure and provides intelligence for security operations and exposure management.
- Based in
- Ann Arbor, United States
- Founded
- 2017
- Ownership
- Private
About Censys
Censys provides internet intelligence and insights for security operations and exposure management. Its platform is built on a map of the internet that covers IP addresses, ports, services, certificates, web properties and DNS. The company sells to Global 2000 enterprises, governments, financial services firms, healthcare providers, energy and utility companies, and managed security service providers. It also works through a partner programme. The platform helps security teams find their own exposed assets, monitor suppliers for vulnerabilities, and track adversary infrastructure such as malicious domains and command-and-control servers. It offers real-time visibility, historical analysis, and relationship mapping. Censys says its data is first-party and continuously refreshed, rather than aggregated from static threat feeds. This supports SOC triage, threat hunting, incident response, and detection engineering. The company also runs Censys ARC, a research team that produces threat, vulnerability and internet intelligence.
Products
- Censys PlatformA platform for understanding and acting on internet data, with visibility into assets, exposures and threats.
- Censys SearchA search tool for internet intelligence used in security operations.
- Censys CoreA source of truth for security operations that provides internet intelligence for threat validation and investigations.
- Censys ASMAn attack surface management product that identifies internet-facing exposures.
- Censys Internet MapA map of the internet covering IPs, ports, services, certificates, web properties and DNS.
- Censys Unlimited EnrichmentA feature that provides unlimited enrichment lookups.
Ownership and deals
- Raised $40m in a Series D roundInvestor Morgan Stanley Expansion CapitalReport on the Censys funding round of April 2026 (opens in a new tab)
- Raised $30m in debt fundingReport on the Censys funding round of April 2026 (opens in a new tab)
- Raised $50m in a Series C roundInvestors Decibel Partners, GV and GreylockReport on the Censys funding round of October 2023 (opens in a new tab)
- Raised $25m in debt fundingInvestors SVB Capital and Silicon Valley BankReport on the Censys funding round of October 2023 (opens in a new tab)
- Raised $35m in a Series B roundReport on the Censys funding round of January 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.