Features new to Windows Vista Windows Vista, Internet Explorer operates in a special "Protected Mode", which runs the browser in a security sandbox that has no access to the rest of the operating system or file system, except the "Temporary Internet Files" folder. This feature aims to mitigate problems whereby newly discovered flaws in the browser (or in ActiveX controls hosted inside it) allowed hackers to subversively install software on the user's computer (typically spyware). Internet Explorer 7 in Windows Vista also exclusively supports Advanced Encryption Standard (AES) key lengths up to 256 bits outlined in RFC 3268 and certificate revocation checking using Online Certificate
Features new to Windows Vista users—was a significant source of power transition failures in previous versions of Windows and often resulted in decreased battery life, overheated systems, potential data loss, and an eventual user distrust of power-saving capabilities. During the development of Windows Vista, Microsoft indicated that it would allow the sleep process to be vetoed in the operating system, but subsequent investigations by the company revealed that this capability was frequently abused by application developers. However, administrators can still enable veto functionality through group policy. Windows Vista introduces a new Hybrid Sleep power-saving mode that combines hibernation and sleep mode functionality. When active, Hybrid