It's checking for certificate status, not so much phoning home. To my knowledge, it is only sending some hashes to Apple. It is not sending any personal data.

It's checking for certificate status, not so much phoning home. To my knowledge, it is only sending some hashes to Apple. It is not sending any personal data. Here is a good write-up on the issue: https://www.sentinelone.com/blog/what-happened-to-my-mac-apples-ocsp-apocalypse/ https://www.sentinelone.com/blog/what-happened-to-my-mac-app... I recommend that people not block oscp.apple.com as it has security benefits. If your threat model dictates blocking oscp.apple.com then you probably should not even be running macOS (or Windows).