Dass die großen Internet-Unternehmen von PRISM wussten, ist bekannt. Yahoo hatte ursprünglich auch dagegen geklagt, aber verloren. Die New York Times berichtet unter Berufung auf neu veröffentlichte Dokumente: U.S. threatened massive fine to force Yahoo to release data

The U.S. government threatened to fine Yahoo $250,000 a day in 2008 if it failed to comply with a broad demand to hand over user communications — a request the company believed was unconstitutional — according to court documents unsealed Thursday that illuminate how federal officials forced American tech companies to participate in the National Security Agency’s controversial PRISM program.

The documents, roughly 1,500 pages worth, outline a secret and ultimately unsuccessful legal battle by Yahoo to resist the government’s demands. The company’s loss required Yahoo to become one of the first to begin providing information to PRISM, a program that gave the NSA extensive access to records of online com­munications by users of Yahoo and other U.S.-based technology firms.

The ruling by the Foreign Intelligence Surveillance Court of Review became a key moment in the development of PRISM, helping government officials to convince other Silicon Valley companies that unprecedented data demands had been tested in the courts and found constitutionally sound. Eventually, most major U.S. tech companies, including Google, Facebook, Apple and AOL, complied. Microsoft had joined earlier, before the ruling, NSA documents have shown.

Yahoo kommentiert selbst:

In 2007, the U.S. Government amended a key law to demand user information from online services. We refused to comply with what we viewed as unconstitutional and overbroad surveillance and challenged the U.S. Government’s authority.

Our challenge, and a later appeal in the case, did not succeed. The Foreign Intelligence Surveillance Court (FISC) upheld the predecessor to Section 702 of the FISA Amendments Act. The Court ordered us to give the U.S. Government the user data it sought in the matter.

Und auch der Chef der US-Geheimdienste kommentiert:

Today, following a renewed declassification review, the Executive Branch is publicly releasing various documents from this litigation, including legal briefs and additional sections of the 2008 FISC‑R opinion, with appropriate redactions to protect national security information. These documents are available at the website of the Office of the Director of National Intelligence (ODNI), and ODNI’s public website dedicated to fostering greater public visibility into the intelligence activities of the U.S. Government, icontherecord.tumblr.com.