When operation first came to light, it looked like a targeted strike against a few high value targets in the Dark Web drug trade. Now the full scope of that international law enforcement crackdown has been revealed, and it’s a scorched-earth purge of the Internet underground.

The European police agency Europol along with the FBI and the Department of Homeland Security announced that the operation has now arrested people in as many countries and seized hundreds of Dark Web domains associated with well over a dozen black market websites. Just how law enforcement agents were able to locate the Dark Web sites despite their use of the Tor anonymity software remains a looming mystery.