There's a MSN Messenger worm spreading.It sends messages to other Messenger Contacts that are along the lines of: Psssssst .... just between me and you, please accept Looking for hot summer pictures ? well here they are !!…and includes a link to a file hosted on chatamis.net.Chatamis.net seems to be an innocent bystander. They have been notified.We detect the file as Backdoor.Win32.IRCBot.acd.