Criminal investigators are increasingly asking Google to identify users who searched for specific terms, using so-called «reverse keyword warrants» that privacy advocates warn could expose innocent people.
Unlike traditional warrants targeting known suspects, keyword warrants work backward, requiring Google to provide data on accounts that searched certain phrases, such as an address or terms like «pipe bomb,» within a set time frame. Authorities have used the tactic in cases ranging from U.S. bombings to international political assassinations.
Supporters argue the method can generate leads in complex investigations. In one Pennsylvania rape case, a keyword warrant helped identify a...