While going over a batch of phishing e-mails that were delivered to us here at the Internet Storm Center during the first half of September, I noticed one message which was somewhat unusual. Not because it was untypically sophisticated or because it used some completely new technique, but rather because its authors took advantage of one of the less commonly misused aspects of the URI format – the ability to specify information about a user in the URI before its "host" part (domain or IP address).