When one builds an OS where image files are executable this keeps happening, … “The email arrives with the subject “Here you have.” An executable screensaver that’s disguised as a PDF document then tries to send the same message to everyone listed in the recipient’s address book. The .scr file is a variation of the W32.Imsolk.A@mm worm Symantec discovered last month.”
Come on, people! WAKE UP! Quit using an OS written by amateurs. Your PC is supposed to work for you not some criminals on the web or in Redmond.
Read it and weep at http://www.theregister.co.uk/2010/09/10/email_worm_spreading/
Run GNU/Linux and be free of this malaise in IT.
Update Nasa got hit by this.