The US National Security Agency (NSA) is the cryptologic intelligence and security agency of the United States Government, based in Fort Meade (Maryland, USA). The NSA is part of the American Department of Defence (DoD) and is responsible for the collection (interception) and analysis of foreign communications and foreign signals intelligence (signals intelligence and cryptanalysis).The NSA is also responsible for the protection of US government communication and information systems against evesdropping by similar agencies from other nations. For this, the NSA has (co) developed a range of cryptographic algorithms and encryption devices. Most of these products were initially developed for use by the US military and the US government, but some have been made available to restricted commercial users as well – often as commercial off-the-shelf (COTS) products via a range of suppliers – and also to the governments of allied and friendly nations.

Below is a non-exhaustive overview of the various types of encryption products developed and/or endorsed by the NSA. As most of the NSA‘s work is classified, there may be omissions or errors. The information below is based on publicly available information about NSA products, algorithms and protocols. We also show the evolution of the NSA encryption products, along with examples of devices that contain NSA algorithms. Finally, we show cases in which the NSA has intervened in order to create a so-called backdoor. source

• NSA-backdoored equipment info found OFF this website
• U.S. Government Catalogue of Cellphone Surveillance Devices
• Backdoors on Wikipedia
• National Security Agency
• Central Intelligence Agency
• NSA EXTRACTED INFO
• CRYPTO MUSEUM
• Edward Snowden
• Stingray
• Pegasus Spyware
• X-Keyscore