Virus alerts call for downloading sex videos in email

Informed security companies on September 10 issued warnings about a computer virus spreading from email through offers to download free sex movies or files .

McAfee Labs said the " Here you have " virus attacks computers running Microsoft's Windows operating system. Its name is based on the subject line in emails sent to trusted recipients.

These letters provide a link to a website that offers to download PDF files or movies but actually activate the virus when clicked.

Once activated, the virus will attempt to send the e-mail to all contacts in a recipient's address list. In particular, it also disables the security programs in the recipient's computer.

Kaspersky, another security company, has raised the level of warnings about the threat originating from the virus they call " VBMania ". Kaspersky said the virus was quite dangerous and now it has sent a significant amount of mail.

Meanwhile, according to Fox News, the virus knocked down NASA servers as well as large companies like Comcast cable TV on September 9.