American digital trust and cybersecurity company operating as a certificate authority (CA) and provider of the DigiCert ONE platform for PKI, certificate lifecycle management, and DNS services.
DigiCert, Inc. is an American digital trust and cybersecurity company founded in 2003 by Ken Bretschneider, headquartered in Lehi, Utah. The company operates as a certificate authority and provides DigiCert ONE, a cloud-based platform for PKI (Public Key Infrastructure), certificate lifecycle management, DNS services, and IoT and email security. DigiCert is a founding member of the CA/Browser Forum (since 2005) and participates in IETF and ETSI standards work. The company is privately held; majority owners are private equity firms Thoma Bravo (since 2015) and equal partners Clearlake Capital Group and TA Associates (since 2019). Key acquisitions include Verizon's SSL/TLS business (2015), Symantec's website security business with the GeoTrust, RapidSSL, Thawte, and VeriSign brands (2017), QuoVadis (2018), Mocana (2022), DNS Made Easy (2022), Vercara/Neustar Security Services (2024), and Valimail (2025). DigiCert serves more than 125,000 customers, including over 90% of the Fortune 500.
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