Tested with HotSync Manager version 4.0.4.0 If you connect to the port HotSync Manager listens on for a network = request telnet 127.0.0.1 14238 And send the data "OK ATDT<" followed by CRLF A message will appear "Out of memory. Please free some memory, then choose retry" It will give you option for abort, retry, ignore. If you choose ignore, or retry, Hotsync Manager will just hang until the = process is terminated. If you choose abort, you get "Runtime Error!" abnormal program = termination, and it will close. I haven't seen this particular type of DoS on HotSync Manager anywhere. Regards, Gary H. Jones II Point Blank Security www.pointblanksecurity.com