Censys is a leading Internet Intelligence Platform for Threat Hunting and Exposure Management.

Censys helps information security practitioners discover, monitor, and analyze devices that are accessible from the Internet.

Censys was co-founded in 2017 at the University of Michigan, by Zakir Durumeric, Alex Halderman, David Adrian, Dave Corcoran and Brian Kelly. The company is headquartered in Ann Arbor, Michigan.


Censys collects Internet data about every host online and enriches that data with the security information you need, providing you with the level of insight you need to secure your company.


Censys' dashboard lets security teams visualize the entire dynamic attack surface and begin investigations into risks, misconfigurations, and anomalies. Companies can drill down into potential risks on the attack surface, including the asset risk type, the number of hosts affected, and how critical the risk is. 


Censys has performed thousands of Internet-wide scans, consisting of trillions of probes. Customers like Google, Cisco, Microsoft, Samsung, Swiss Armed Forces, the U.S. Department of Homeland Security, Cybersecurity & Infrastructure Security Agency,, and over 51% of the Fortune 500 rely on the company's Internet-wide continuous visibility platform to discover and prevent cybersecurity threats.


Censys is backed by Intel Capital, GV, Greylock Partners, Decibel Partners, SVB Capital, Silicon Valley Bank, HD Moore, Mango Capital, Ascension Ventures, Four Rivers, Hamilton Lane, and others. The company raised $75M ($50M in Series C and a $25M Debt) financing on Oct 24, 2023. This brings Censys' total funding to $128.1M to date.

Free Domain Privacy

  • Year founded: 2017
  • Funding Info: $128.1M over 4 Rounds (Latest Funding Type: Series C)
  • Yearly Revenue: NA
  • Employee Size: 51-200
  • Business Valuation: NA
  • City/Town: Ann Arbor
  • State: Michigan
  • Country: United States
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