On Friday, the 21st of February, Apple acknowledged that they had a critical security hole in their iOS operating system. It was specifically an SSL (Secure Socket Layer) vulnerability in iOS and OS X that exposes iOS and OS X devices to a "man in the middle" attack.
Apparently, Apple used "raw OpenSSL for HTTPS, but didn't include hostname verification". This is a glaring flaw because it would allow anyone with a valid SSL certificate to masquerade as a trusted website to harvest your communications or login information.
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