ScatterChat Advisory 2006-01 – Steven Murdoch, a security researcher with the University of Cambridge, discovered a theoretical weakness in ScatterChat’s cryptographic module. He found that an eavesdropper might locate patterns in a private communications channel if extraordinarily large amounts of messages were exchanged in a single conversation.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/49270/ScatterChat-2006-01.txt
Source: https://packetstormsecurity.com/files/49270/ScatterChat-2006-01.txt.html