A new Sober mass-mailed worm debuted over the weekend and is picking up steam, causing several anti-virus vendors to boost their threat ranking.
Sober.C, following hard on the heels of Sober.B, which debuted last week, has hit particularly hard in Germany, according to security firms. Packed with its own SMTP mailing engine, the worm includes a file attachment -- which can come with any of several file names -- that when opened, puts up a bogus error message on Microsoft Windows machines.
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