Apple has fixed a large number of security vulnerabilities in OS X and iTunes which are detailed below.
This feature which runs by default can severely compromise their privacy, they say.
Search results found on your Mac will not be sent.
Searches for common words and phrases will be forwarded from Apple to Microsofts Bing search engine.
These searches are not stored by Microsoft.
It also includes fixes for dozens of remote code execution vulnerabilities.
This issue was addressed by disabling LEAP by default.
Apple has also fixed the high risk vulnerability in the way that OS X handled altered apps.
This issue was addressed by ignoring signatures of bundles with resource envelopes that omit resources that may influence execution.
source: www.techworm.net