intelligence agent

In January, a panel set up by India to examine Washington's allegations recommended legal action against an unnamed individual believed to be the former intelligence agent.

This has meant that if Iranian intelligence agents force detainees to reveal their passwords, they cannot access that person's communications, the activist says.

The prosecution case at Megrahi's trial, which will be repeated in Washington, was that Libyan intelligence agents smuggled the bomb onto a flight from Malta in an unaccompanied suitcase.

Iran occasionally announces arrests of alleged Israeli intelligence agents and the breaking up of alleged Israeli spy cells, though without providing substantial evidence.

Once an intelligence agent is unmasked, their career options and movements are limited.