Apple has posted security updates and feature improvements for its desktop, mobile, and developer gear. These updates cover a multitude of issues mainly involving vulnerabilities that could allow for arbitrary code execution should a maliciously crafted website be visited.
The issued updates are for iOS, OS X, and watchOS, plus iTunes on Windows, Safari on OS X, and Mac firmware.
For more information on the updates and for a breakdown of the individual issues that the updates address, please visit https://support.apple.com/en-us/HT201222