What Is Sectigo SSL?
Sectigo is the world’s largest and most widely used commercial Certificate Authority. Known as Comodo CA until 2018, Sectigo has issued more than 100 million digital certificates. Sectigo SSL certificates protect the traffic between your website and visitors with 256-bit encryption while offering the broadest product range, flexibility and automation. With everything from a single-site DV certificate to enterprise-scale Multi-Domain and Wildcard solutions, Sectigo is the preferred SSL ecosystem for businesses, e-commerce stores, agencies, hosting providers and developers.
Sectigo (formerly Comodo CA) is the world’s most widely used commercial Certificate Authority; with DV, OV, EV and Wildcard SSL certificates it offers the broadest range, automation and scalability for businesses, e-commerce, hosting providers and developers, and has issued over 100 million certificates.
How Does Sectigo SSL Work?
Sectigo SSL is built on public-key encryption and a widely trusted root-certificate hierarchy. When a visitor connects, an "SSL handshake" takes place between browser and server; the certificate’s validity is verified up to Sectigo’s trusted roots and all data is protected with 256-bit encryption. The padlock icon and the https:// prefix in the address bar signal that this secure tunnel is active.
For developers and hosting providers, Sectigo offers automated issuance and renewal via ACME and API — integrating certificate management into CI/CD and large-scale infrastructure.
Why Is the Broadest Range Important?
Every project has different needs: a blog needs an economical DV certificate, a corporate site needs OV, an e-commerce store needs EV, a hosting provider needs Wildcard or Multi-Domain. Sectigo’s broadest product range and flexibility means you can meet all of these from a single provider, and scale your infrastructure cost-effectively. That’s why Sectigo is the most widely adopted commercial CA.
Who Is Sectigo SSL For?
Sectigo is ideal for businesses, e-commerce stores, agencies, hosting providers, developers and enterprises. PositiveSSL (DV) is recommended for blogs and personal sites; InstantSSL (OV) for corporate sites; EV SSL for e-commerce and finance. For many subdomains or sites, Wildcard and Multi-Domain solutions provide single-certificate management, while ACME/API automation suits developers and hosts.
Is Sectigo SSL Reliable?
Yes, extremely reliable. Sectigo uses 256-bit encryption, the industry’s highest standard, and is compatible with virtually all browsers and devices. As the world’s largest commercial CA, it has issued over 100 million certificates and offers high warranty coverage from $10,000 up to $1,000,000.
Sectigo or Comodo?
Comodo CA became Sectigo in 2018. So certificates such as "Comodo SSL" are now issued by Sectigo — the brand heritage, root certificates and chain of trust are fully preserved. Sectigo is the world’s largest commercial Certificate Authority. In short, "Comodo" and "Sectigo" refer to the same trusted infrastructure.