CHAMPAIGN -- Some private conversations are now in the public eye with the recent NSA phone records controversy.
At the center of the controversy are fourth amendment rights -- the right to privacy.
Local security expert John Bambenek said the government can use data-mining to track down possible threats.
Searching key words or phrases in conversations is a common method.
"There are some times where the government should operate in secret, and sometimes it should be a little more public. And of course that balance is going to be reassessed in this case," said Bambenek.