"The ACLU are taking a court action against the PRISM surveillance system which is authorised under the Patriot Act Section 215 using a FISA Order (Foreign Intelligence Surveillance Act). PRISM collects personal information from users
“The ACLU are taking a court action against the PRISM surveillance system which is authorised under the Patriot Act Section 215 using a FISA Order (Foreign Intelligence Surveillance Act). PRISM collects personal information from users of Skype, Facebook, Google, Microsoft etc from inside and outside the USA (described as “customers” of US-based internet services).”
Full story: ACLU Files Lawsuit Challenging NSA’s Patriot Act Phone Surveillance (ACLU, link)
See also: What’s in the rest of the top-secret NSA PowerPoint deck? (Wired): refers to fact that only 5 of the 41 pages handed over to the press by Edward Snowden have so far been published.
And: Spy court urged to unmask legal basis for NSA dragnet phone surveillance (Wired)