NORFOLK, Va. (AP) — A Virginia man who was caught in a vast FBI child pornography sting has been sentenced to more than three years in prison.

Monday’s sentencing of Edward Joseph Matish III in Norfolk comes several months after he failed to convince a federal judge to dismiss his case over privacy concerns. He ultimately pleaded guilty in October.

Matish was caught after FBI agents took over a clandestine child porn website known as Playpen. The agents then hacked users’ computers to identify them.

The sting has sparked more than 200 cases across the country. But defense attorneys have challenged many of the prosecutions, saying the agents lacked authority to access users’ computers. Some cases have been thrown out.

Experts say the sting could ultimately reshape the law on computer search and seizure.