https://blog.cloudflare.com/cloudflares-transparency-report-for-second-half-2016-and-an-additional-disclosure-for-2013-2/ Cloudflare’s Transparency Report for Second Half 2016 and an Additional Disclosure for 2013
10 Jan 2017 by Kenneth R. Carter.
Cloudflare is publishing today its seventh transparency report,
https://cloudflare.com/transparency covering the second half of 2016. For the first time, we are able to present information on a previously undisclosed National Security Letter (NSL) Cloudflare received in the 2013 reporting period.
Wikipedia provides the most succinct description of an NSL:
An NSL is an administrative subpoena issued by the United States federal government to gather information for national security purposes. NSLs do not require prior approval from a judge.… NSLs typically contain a nondisclosure requirement, frequently called a "gag order", preventing the recipient of an NSL from disclosing that the FBI had requested the information.
https://en.wikipedia.org/wiki/National_security_letter Shortly before the New Year, the FBI sent us the following letter about that NSL.
https://docs.google.com/viewer?srcid=0B4XtysvKJwSAaVcycjBrUjBLRUk&pid=explorer&efh=false&a=v&chrome=false&embedded=true https://docs.google.com/viewer?srcid=0B4XtysvKJwSAR2hNaDVSaDZIWjA&pid=explorer&efh=false&a=v&chrome=false&embedded=true See link for rest of article.