Sounds like Dan wrote a tool which attempts to connect inputs/outputs
and make a map of a person on the network, or at least thats my blind
guess.  Something people have been saying was easily possible for some
time, but for some reason people insist on refusing their precious
Bitcoin isnt anonymous.

Matt

On Thu, 2011-08-04 at 10:56 +0000, John Smith wrote:
> L.S.
> 
> Some bitcoin "security vulnerabilities" have been discussed by Dan
> Kaminsky at BH 2011, there is one article about this dated yesterday:
> 
> http://searchsecurity.techtarget.com/news/2240039221/Black-Hat-2011-Dan-Kaminsky-reveals-network-security-research-topics
> 
> The article is very unspecific though. They talk about a tool called
> "blitcoin" that "unmasks" both sides of a bitcoin transaction. A
> google search also turned up nothing, except some misspellings. 
> 
> Does anyone have more information?
> 
> JS