Bitdefender Security Center

November 2003

Malware October summit

October Evil Top Ten from BitDefender

October Evil Top Ten is naught but a collection of midgets and have-beens. Msblast.A is still on top of our top, running strong with twice the number of infected machines it had chalked up last month, but the rest of it is just as peaceful as we like it .


Ranking Virus NamePercentage
1. Win32.Msblast.A 34.2%
2. Win32.BugBear.B@mm 12.5%
3. Win32.Swen.A@mm10%
4. Win32.Parite.B 8.2%
5. Win32.HLLP.Hanta.A 7.0%
6. Win32.HLLW.Agobot.G 7.1%
7. Win32.Worm.Welchia.A 6.3%
8. Win32.P2P.Tanked.B 5.2%
9. JS.Trojan.NoClose.K 4.8%
10. Win32.Klez.H@mm 4.7%


Although it may seem things have soothed down, there are some signs of fresh viral activity scattered within the last days of October. One of the new viruses discovered last week is Sober.A, which seems to be spreading a great deal and might be worthy of taking into consideration for the next month's ranking. And the statistics strongly indicate this trend: after just a few days in the wild, Sober.A is climbing very fast in the weekly virus top and, more interestingly, the infections ratio is going up higher and higher. On the 31st of October, the number of newly infected systems rose to 48% of the total number of infections reported in the previous four days.

Based on past experiences, we strongly suspect that next month will see a renewed flurry of activity on the virus front, but until then BitDefender prefers to keep its users still interested and perfectly protected.

The report, called the "Evil Top Ten", is based on the number of virus occurrences confirmed through BitDefender Response Team tracking.

Note: BitDefender users were protected since the very beginning against the threats described above. Moreover, BitDefender experts were among the first to release antidote tools, freely available on the Internet.

Commercial versions of BitDefender start from USD 29.99 and are available for 30-days free evaluation from www.bitdefender.com.


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About Bitdefender®
Bitdefender è il creatore di una delle linee di prodotti software per la sicurezza Internet più veloci, efficaci e certificate a livello internazionale. Sin dal 2001, Bitdefender è sempre stato un pioniere del settore, avendo introdotto e sviluppato tecnologie di protezione pluripremiate e innovative. Oggi le tecnologie Bitdefender proteggono l'esperienza digitale di circa 400 milioni di utenti home e corporate in tutto il mondo.

Di recente, la società ha ottenuto una serie di raccomandazioni dalle principali riviste indipendenti del settore negli Stati Uniti, in Inghilterra e in tutta Europa, tra cui ConsumerSearch, Which?, Stiftung Warentest e Taenk. La tecnologia antivirus di Bitdefender ha anche ottenuto i migliori risultati nelle prove di comparazione eseguite da AV Test e AV-Comparatives. Maggiori informazioni su Bitdefender e i suoi prodotti sono disponibili presso il nostro ufficio stampa per le soluzioni di sicurezza. In aggiunta, Bitdefender pubblica il blog Malware City in cui fornisce tutti gli ultimi aggiornamenti sulle minacce alla sicurezza, aiutando gli utenti a restare sempre informati nella propria battaglia quotidiana contro i malware.


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