According to Kaspersky researchers, the frequency of attacks that distribute fake anti-virus has dropped from 50,000 to 60,000 per day in June to a current rate of fewer than 10,000 per day.

"The impressive drop is the result of several factors, including law enforcement efforts, improvements in search engine filtering algorithms, and actions undertaken by the security community to disrupt cybercriminal distribution networks," writes ITworld's Lucian Constantin.

"Back in June, authorities in Russia arrested Pavel Vrublevsky, the co-founder of Russian payment processor ChronoPay, who has long been suspected of running one of the biggest fake antivirus affiliate programs," Constantin writes.

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