Popular free certificate authority Let’s Encrypt said it will revoke 3 million Transport Layer Security (TLS) certificates Wednesday, because of a Certificate Authority Authorization (CAA) bug.

Will Let's Encrypt threaten commercial certificate authorities? The new free certificate authority is a great idea, as far as it goes. Should Symantec and the other big CAs be worried? Probably not.

Let's Encrypt is easy to use and free -- no wonder it's the most popular Certificate Authority for securing websites. Here's how you can use it.

Let's Encrypt will revoke over 3 million certificates on Wednesday, March 4th, due to a bug in their domain validation and issuance software.

“Let’s Encrypt” aims to deliver free security certificates, which will make encryption possible for even small websites.

Certifiable Let’s Encrypt takes free “wildcard” certificates live In a victory for securing Web, anybody can now get a certificate valid for every site in a domain.