Let’s Encrypt just announced an infrastructure makeover which means the open certificate authority (CA) is able to re-issue up to 200 million certificates in a 24-hour period, something the service said could be necessary in “some of the worst scenarios.” The upgrade comes a year after Let’s Encrypt was compromised by a Certificate Authority Authorization (CAA) bug and was forced to revoke 3 million Transport Layer Security (TLS) certificates on a single day, March 4, potentially leaving the sites behind them insecure or unavailable. Let’s Encrypt, a free service of the Internet Security Research Group, has secured nearly 250 million websites, toward its goal of “100 percent HTTPS,” the group’s 2020 annual report said.

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