What is the COMODO RSA Certification Authority?

The COMODO RSA Certification Authority is one of the most widely distributed root CAs in the world. Its certificates form the foundation of security for millions of websites, applications, and digital services. But what makes COMODO RSA Certification Authority one of the most trusted names in web security? Let’s explore. Overview of Comodo RSA Certification Authority If you scan the list of trusted roots in any modern browser, you’ll still see “COMODO RSA Certification Authority.” That familiar name belongs to the primary RSA root, first generated by Comodo CA back in 2010 and now operated by Sectigo (Comodo rebranded in 2018). The file name never changed because root keys are essentially “hard-coded” into operating systems and browsers; renaming them would break the chain of trust. Foundation of the chain. Every Comodo or Sectigo-branded TLS certificate whether it’s DV, OV, EV, wildcard, multi-domain, or even a code-signing or S/MIME cert ultimately chains up to this 2048-bit RSA root. Keeps the root undisputedly trusted, and every leaf certificate inherits that trust. Ubiquitous trust store coverage. COMODO RSA root ships with all major desktop and mobile OSs, from Windows and macOS to Android and iOS, plus virtually every mainstream browser. That universal distribution […]