Apple deprecates SHA-1 certificates in iOS 13 and macOS Catalina

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More than two years after Google, Firefox, and Microsoft have taken steps to deprecate TLS/SSL certificates signed with the SHA-1 algorithm, Apple has finally announced a similar measure this week.

In a support page published last night, the Cupertino OS maker said that starting with iOS 13 and macOS 10.15 (Catalina), the two operating systems won’t support HTTPS traffic that uses TLS certificates signed with the SHA-1 algorithm.

“TLS server certificates and issuing CAs…

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