Vulnerability Allowed Hackers to Steal iCloud Keychain Secrets
Apple has recently patched a Keychain vulnerability that could have been exploited by man-in-the-middle (MitM) attackers to obtain sensitive user information. The details of the flaw were disclosed on Monday by the researcher who reported it to the vendor.
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Story added 10. May 2017, content source with full text you can find at link above.