Support by Adobe ended November 15, 2015. Version 10 introduced Protected Mode, a sandbox that employed features and techniques previously in use by Google Chrome and Microsoft Office 2010 to help mitigate or prevent potentially malicious content from affecting users' files or settings in Windows XP, Windows Vista and Windows 7.[21] In Windows Vista and later versions, Protected Mode is implemented as a low integrity process to further restrict the sandbox, and User Interface Privilege Isolation is used to thwart keystroke logging processes that operate at a higher integrity level.[22]