https://nsa.gov1.info/dni/prism.html
"PRISM is a code name for a program under which the United States National Security Agency (NSA) collects internet communications from various U.S. internet companies.[1][2][3] The program is also known by the SIGAD US-984XN.[4][5] PRISM collects stored internet communications based on demands made to internet companies such as Google LLC under Section 702 of the FISA Amendments Act of 2008 to turn over any data that match court-approved search terms.[6] Among other things, the NSA can use these PRISM requests to target communications that were encrypted when they traveled across the internet backbone, to focus on stored data that telecommunication filtering systems discarded earlier,[7][8] and to get data that is easier to handle."
https://en.wikipedia.org/wiki/PRISM_(surveillance_program)
"In 2013 the Washington Post revealed the existence of a secret act called the Prism program. This information was leaked by militarization, who was a private contractor for Booz Allen Hamilton.
The leak was a massive shock in the U.S and around the world. Booz Allen compiled slides detailing how the National Security Agency (NSA) body got direct access to tech servers and pulled out information.
Big tech and internet firms such as Microsoft, Apple, Verizon, Yahoo, AT&T, Google, etc. cooperate with the NSA by giving direct access to their servers."
https://privacysavvy.com/security/spying/prism-program/
"PRISM began in 2007 in the wake of the passage of the Protect America Act under the Bush Administration. The program is operated under the supervision of the U.S. Foreign Intelligence Surveillance Court (FISA Court, or FISC) pursuant to the Foreign Intelligence Surveillance Act (FISA). Its existence was leaked six years later by NSA contractor Edward Snowden, who warned that the extent of mass data collection was far greater than the public knew and included what he characterized as “dangerous” and “criminal” activities."
https://www.theblackvault.com/documentarchive/nsa-surveillance-program-prism/
"PRISM stands for "Planning Tool for Resource Integration, Synchronization, and Management," and is a "data tool" designed to collect and process "foreign intelligence" that passes through American servers"
https://www.cnet.com/tech/services-and-software/what-is-the-nsas-prism-program-faq/
"The unconstitutional surveillance program at issue is called PRISM, under which the NSA, FBI, and CIA gather and search through Americans’ international emails, internet calls, and chats without obtaining a warrant. When Edward Snowden blew the whistle on PRISM in 2013, the program included at least nine major internet companies, including Facebook, Google, Apple, and Skype. Today, it very likely includes an even broader set of companies."
https://www.aclu.org/blog/national-security/privacy-and-surveillance/nsa-continues-violate-americans-internet-privacy
"The top-secret PRISM program allows the U.S. intelligence community to gain access from nine Internet companies to a wide range of digital information, including e-mails and stored data, on foreign targets operating outside the United States. The program is court-approved but does not require individual warrants. Instead, it operates under a broader authorization from federal judges who oversee the use of the Foreign Intelligence Surveillance Act (FISA)."
https://www.washingtonpost.com/wp-srv/special/politics/prism-collection-documents/m/
NSA: Tech Companies Knew About PRISM The Whole Time
https://www.huffpost.com/entry/nsa-prism-tech-companies_n_4999378