Windows users were warned today to be on their guard for a new Trojan that poses as a racy attachment to a saucy email

The Sysbug-A Trojan is disguised as an attachment containing naked pictures of a young couple. It's actually malicious code that, if run, allows hackers to gain control of vulnerable computers. AV firms believe virus writers are distributing the Trojan using spamming software. As usual, Sysbug-A infects only Windows machines. Infectious emails commonly arrive with the subject line 'Re[2] Mary', an attachment private.zip which contains a viral payload called 'wendynaked.jpg.exe', and the following text: Hello my dear Mary, I have been thinking about you all night. I would like to apologize for the other night when we made beautiful love and did not use condoms. I know this was a mistake and I beg you to forgive me... Windows users are urged to update AV signature files to recognise the Trojan and to practice safe computing, which partly involves thinking twice before opening an unsolicited attachment.