Apple has released Security Update 2015-002 for the Mac. It patches the FREAK security flaw on Mac OS X 10.8 and higher.
“FREAK” (Factoring Attack on RSA-EXPORT Keys) that leaves devices vulnerable to hacking when they visit hundreds of thousands of supposedly secure Web sites, including Whitehouse.gov, NSA.gov and FBI.gov., reports the Washington Post. You can install Security Update 2015-002 on OS X Yosemite by choosing Apple menu > App Store, then selecting the Updates tab.