Pre-boot protected memory channel

Preventing a copy of a protected window

Preventing fraudulent internet account access

Prevention of disk piracy

Privacy policy change notification

Privacy preserving data-mining protocol

Privileged access to encrypted data

Privileged execution context restricting use of hardware...

Process verification

Process verification

Processing copy protection signals

Processor mode for limiting the operation of guest software...

Program substitution

Proprietary portable audio player system for protecting...

Protected media path and refusal response enabler

Protected media path and refusal response enabler

Protecting a service provider from abuse

Protecting against software piracy

Protecting content on medium from unfettered distribution

Protecting decrypted compressed content and decrypted...