How did Malik frame Dedsec?

We have a video from the SIRS director saying Malik is an enemy and trying to kill her, as she’s killed. We also have audio clips of him admitting to the crimes over and over as well.

This is my favorite storyline of the game but this kind of always bothered me. Why couldn’t we just release all of that evidence? It would at least make his double agent lie look really sketchy.