Its existence was revealed during the 2013 global surveillance disclosure based on documents leaked by the former NSA contractor Edward Snowden.
[1][2][3][4] The Directorate-General for External Security (DGSE) of France maintains a close relationship with both the NSA and the GCHQ after discussions for increased cooperation began in November 2006.
[5] By the early 2010s, the extent of cooperation in the joint interception of digital data by the DGSE and the NSA was noted to have increased dramatically.
[1] In 2013, the existence of the Lustre treaty was revealed in documents leaked by the former NSA contractor Edward Snowden.
[7] From December 2012 to 8 January 2013, over 70 million metadata records were handed over to the NSA by French intelligence agencies.