Previously, as a White House computer supervisor, (Laura) Callahan threatened computer workers to keep quiet about an embarrassing server glitch that led to  the loss of thousands of archived emails covered by federal subpoenas pertaining  to multiple Clinton scandals.

Former co-workers say they're shocked that Callahan passed a security background check and landed another sensitive post inside the federal government.

"She's a security risk," said a government computer specialist. "I don't know  how she got clearance."

"We're fuming about it," said another federal employee. "Knowing her, I don't  see how she could ever be 100-percent honest."