CIA has shills on the Usenet/Some are posing as "UFO Debunkers!"

The Central Intelligence Agency has shills on usenet.  If they see that you
post dissenting opinions you may find yourself getting little"friendly"
notes seeking to establish a relationship with you.  Later you might
find offers from this person of "insider info" or some other such
thing.

The CIA are doing just the opposite. Alien spacecraft are being used as
a cover for black flying. According to Janes 38% of defense research is
black (ie. does not exist). Black aircraft are seen from time to time
and attibuted to little green men.

Thisd has been well documented.