The propagation capacity of Sober.AH, means that every time there is a new infection, the chances of receiving an infected email increase exponentially.

The propagation capacity of Sober.AH means that every time there is a new infection, the chances of receiving an infected e-mail increase exponentially.

It is impossible to ignore the fact that each of these variants generates numerous infections and therefore the total number of zombie computers could reach hundreds of thousands.

We were surprised by the quantity of data that a single one of these Trojans was able to steal... We don't know how many were generated or sold before the system was dismantled, and so the number of companies whose data is now in jeopardy could be very high.

These actions are financially motivated and aim to exploit the popularity of these search engines to increase visits to the pages with the altered results. To avoid this kind of attack, it is vital that users have reliable antivirus protection and keep their systems up-to-date, as the vulnerabilities used have often been in existence for some time.

The main priority now is to minimize the effect of this worm. Therefore, the usual recommendations apply: keep security solutions up-to-date and scan the entire system to ensure that it is free from threats.