Did NSA Put a Secret Backdoor in New Encryption Standard? (2007)
The NYT piece today had different redactions than the Guardian, showing the NSA may have done this with commercial VPN ASICs.The Times includes "Complete enabling for [XXXXXXX] encryption chips used in Virtual Private Network and Web encryption devices."
http://www.nytimes.com/interactive/2013/09/05/us/documents-r...(compare to http://www.theguardian.com/world/interactive/2013/sep/05/sig... )