Expand and define each of the following acronyms TCG TCB PIT

Expand and define each of the following acronyms: TCG, TCB, PITA, MAC, DAC, NGSCB.

TCG: Trusted Computed Group: Its a non-profit organization formed in 2003 to develop and promote security specifications for computers and networks.

TCB: Trusted Computing Base: Its a set of all hardware, firmware, and software components that are critical to computer security.

PITA:

MAC: Mandatory Access Control: Is access that is not controlled by the owner of the object.

DAC: Discretionary Access Control: A type of access that is controlled by the owner of the object.

NGSCB: Next Generation Secure Computing Base: Its a computing base designed to work with special hardware which is to be developed by TCG.