Security gurus are issuing dire warnings about the dangers of unsolicited emails claiming to contain obscene pictures and sex movies. Why? Because they apparently contain the Nyxem-D worm (which also goes by the names Email-Worm.Win32.VB.bi and W32.Blackmal.E@mm.) This malware attempts to harvest other email addresses from infected machines, and utilises its own SMTP engine. The e-mails in question have the following features:

Subjects: *Hot Movie*, Arab sex DSC-00465.jpg, Fw: SeX.mpg, Fw: Sexy, Fwd: Crazy illegal Sex!

Text body: F**kin Kama Sutra pics, Note: forwarded message attached. You Must View This Videoclip!.

Attachment: Adults_9,zip.sCR, Photos,zip.sCR, SeX,zip.scR, Sex.mim.

The worm alters the Windows registry to disable security applications, and makes sure that it runs on start-up. It also attempts to delete certain files related to security tools which it may find on the system. Our advice as always is to keep your anti-virus software up to date, and to never download and open attachments from untrusted sources. You should delete e-mails that you don’t expect to receive without opening them.