Last week, the security team at Return Path discovered that we were the source 
of a list of addresses used in a targeted phishing attack against a number of 
ESPs.  We're sharing the results of our investigation with the larger 
community, in order to help others avoid similar attacks.

I'm including NANOG in this distribution because, even though this particular 
attack was focused on mail operators, the same tactics could work equally well 
on network operators.

http://www.returnpath.net/blog/received/2010/11/phishing-attack-an-open-letter-to-the-anti-spam-and-mailbox-operator-community/

--
J.D. Falk
Internet Standards & Governance
Return Path


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