It hit bugrtraq, now it's on CNet
I am talking about the popular hacker tool today called Fragroute. Arbor Networks security researcher Dug Song posted the tool to his Web site this week.

The Fragroute program is a dual-use program: It illuminates weaknesses in a network's security--information that can aid a system administrator in protecting the network or helping a hacker attack the network. The program exploits several ways of inserting specific data into a sequence of information in order to fool detection programs. The methods were highlighted in a January 1998 paper written by Thomas Ptacek and Timothy Newsham of Secure Networks, a company later bought by Network Associates.

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