Related Spiegel article (hat tip to cryptoparty.is mailing list): http://www.spiegel.de/international/germany/inside-the-nsa-s-war-on-internet... The money quote: "Things become "catastrophic" for the NSA at level five - when, for example, a subject uses a combination of Tor, another anonymization service, the instant messaging system CSpace and a system for Internet telephony (voice over IP) called ZRTP. This type of combination results in a "near-total loss/lack of insight to target communications, presence," the NSA document states. Would like to own an IP hard phone with built-in ZRTP support. So far Snom 370s with TLS enabled firmware have been the next best thing. Never even heard of IM system 'CSpace' before, no mention of in the cpunk archives either. Might be standing up a MixMinion node after watching Tom Ritters talk at Defcon 21 'De-Anonymizing Alt.Anonymous.Messages' http://www.youtube.com/watch?v=_Tj6c2Ikq_E