Top 10 most dangerous viruses in November

Security firm Sophos has just released a report on the top 10 most dangerous viruses in October. Accordingly, Netsky has officially become the "former champion" after nearly four consecutive months of dominating the rankings to cede position. Sober for a new face - Sober.

Sophos's report shows that although it was discovered only at the end of November, the Sober-Z virus - by the name of Sophos - quickly overcame veteran rivals to dominate the rankings. November.

Sophos's statistics show that for every 13 emails sent, there will be an email with Sober. The boom of Sober-Z has quickly overthrew the 'dynasty' of Netsky-P which has dominated for over 4 months, pushing Netsky down to No. 2.

The new variant of the Sober-Z virus, which now accounts for 42.9% of all virus infection reports sent to Sophos, has the ability to send a copy of itself as an attachment in the letters. The power to the addresses is stored in the contact book once infected on the user's computer. Not only that Sober-Z is also trying to disable security software on users' computers, making it more powerful.

Once the user has opened the attachment, Sober-Z immediately activates and scans the hard drive on the infected computer for email addresses in order to send a copy of itself to those addresses.

Carole Theriault - senior security consultant of Sophos - said: 'Since the first time we discovered Sober in October 2003, it is clear that the author of this virus tried a lot in improving tricks to trick users into opening letters containing Sober. This latest variant falsifies the message content from the FBI and CIA accusing users of accessing illegal websites. '

Sober virus is also a virus that can use 2 different languages ​​- English and German. In addition to falsifying notifications from CIA and FBI agencies, the virus has a German version that says 'Who wants to be a billionaire' as well as fake information about American star Paris Hilton.

Besides Sober in this month's chart, familiar names like Netsky, Mytob and Zafi continue to dominate. This shows us that at present authors of viruses are constantly creating new variants that are highly effective for financial and monetary purposes.

The Great Mytob family continues to demonstrate the ability to spread widely and far away with many different variants occupying 5 positions on the ranking of the 10 most dangerous viruses in November.

It can be said during the time when hackers and virus writers are increasingly focusing on the quality of viruses rather than quantity. Today's viruses are much more widespread and dangerous than before.

Top 10 most dangerous viruses in November

1. New W32 / Sober-Z (42.9%)
2. W32 / Netsky-P (8.1%)
3. W32 / Mytob-GH (6.8%)
4. W32 / Mytob-EX (4.5%)
5. W32 / Zafi-D (4.0%)
6. W32 / Mytob-BE (2.3%)
7. W32 / Zafi-B (2.1%)
8. W32 / Mytob-AS (1.6%)
9. W32 / Netsky-D (1.2%)
10. W32 / Mytob-C (1.1%)
Other (25.4%)