>>1462222
>>1461832
^^^^sauce for warrant and ThinThread…Grassley part of the show now?
"Though ThinThread was intended to intercept foreign communications, it continued documenting signals when a trail crossed into the U.S. This was a big problem: federal law forbade the monitoring of domestic communications without a court warrant. And a warrant couldn’t be issued without probable cause and a known suspect. In order to comply with the law, Binney installed privacy controls and added an “anonymizing feature,” so that all American communications would be encrypted until a warrant was issued. The system would indicate when a pattern looked suspicious enough to justify a warrant."
https://www.newyorker.com/books/double-take/takes-the-n-s-a-s-surveillance-programs