What is the objectives?

Answer 1

OPSEC - Operational Security.

Basically, the idea behind it is to keep details of missions and operations contained, and prevent the spread of information beyond those who need to be in the know. For example, if your unit is about to go on a major operation in Afghanistan, you don't jump on the computer at the MWR centre and tell all your friends and family about it - that would be a violation of OPSEC.

Answer 2

In our body means HEART ,then computer means CPU.