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Latest worm uses IT administrator tactics

Mimail bug tries to convince you it was sent by the IT department A new mass-mailing virus, which disguises itself as a file sent by a computer user’s network administrator, began infecting systems on Friday. The worm, which is being dubbed ‘mimail’, attempts to exploit a vulnerability in Internet Explorer that allows a script to be executed by an infected computer. The worm then tries to use that script to mass email itself, potentially clogging mail servers or slowing down networks, according to anti-virus company Symantec. The arrival of Mimail comes amid heightened fears that a large-scale attack on the internet could be looming. The US government warned last week that a widespread flaw in Windows could be used to generate an attack. The email that carries the worm has “your account” in the subject line, according to Symantec, and the body reads, “Hello there, I would like to inform you about important information regarding your e-mail address. This e-mail address will be expiring. Please read attachment for details.” It is then signed “Best regards, Administrator” and contains an attachment labelled “message.zip” that carries the malicious code. Full Story

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