I already wrote a post about how the FISA Court rejected the arguments of the public advocate that it appointed to review the legality and constitutionality of the infamous backdoor searches. However, I wanted to put up a second post as well, digging a little deeper into what the ruling itself means, rather than just focusing on the public advocate part of it. Because it‘s pretty scary. We already knew that, once that data was collected under the Section 702 PRISM program, the NSA opened it up to both the CIA and FBI to search on for other purposes.

However, as Elizabeth Goitein explains over at Just Security, even then there were some limitations: