A serious security vulnerability in OS X has been patched by Apple. Devices running iOS and OS X were vulnerable to keylogging and data sniffing attacks due to improper implementation of the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols.
Although the security vulnerability was serious, it required attackers to be within relatively close proximity to victims. Public Wi-Fi networks like those found in coffee shops could have served as an attack point for sniffing out data that was supposed to be encrypted. This means the security flaw wouldn’t have been a widespread disaster like Adobe Flash Player vulnerabilities, which could affect millions of machines.
In addition to the SSL fix, OS X 10.9.2 includes new features and improvements for FaceTime, Mail, Safari, and more. For more details about everything that’s included in this update, hit up the source link below.
Source: Apple Support