How much call data do law enforcement agencies need? Here in the US, law enforcement utilize cell tower spoofers, cell tower data dumps and Hemisphere database searches to obtain call data, along with location information and whatever else can be gathered by these tools. These are all deployed without warrants, using the Third Party Doctrine loophole. No expectation of privacy in stored business records means no warrant is necessary.

But this isn‘t just an American thing. Other countries with cell towers and same sort of free-range access to „business records“ are doing the same thing.