Comment by heavyset_go

CALEA and courts have compelled companies to install systems that allow them to track/record targets' communications and data, even if their own systems weren't designed with such abilities in mind.

From[1]:

> USA telecommunications providers must install new hardware or software, as well as modify old equipment, so that it doesn't interfere with the ability of a law enforcement agency (LEA) to perform real-time surveillance of any telephone or Internet traffic.

[1] https://en.wikipedia.org/wiki/Communications_Assistance_for_...