informant

"You can't make friends in cyber-crime, because the next day, your friends will be arrested and they will become an informant," he says.

By then, Sánchez had developed a network of informants who told him the cartel had strengthened its presence at the mine.

Horst, the informant, was soon driving around East Berlin in his reward—a new car.

Australia's most famous gangster won a reduced jail sentence Thursday on one of his drug-related convictions, after it was revealed his lawyer was a police informant.

According to Crow, Darby was the fifth informant that the government had sent after him at that point.