Apple, Kaspersky Attack Massive Mac Trojan

Free Flashback Trojan detection and removal tools introduced for Mac users as bot counts drop.

What may have been the largest known botnet made up of Apple Macintosh computers appears to be gradually waning in activity, and Kaspersky Lab has released a free detection and removal tool, available online, for Mac users to check whether they are infected by the so-called Flashback Trojan.
In addition, Tuesday night, Apple announced on its support website that it is developing software that will
remove the Flashback Trojan
and that it is working with ISPs worldwide to disable this command and control network for the Flashback botnet.
Kaspersky Lab, which counted up to 670,000 infected OS X machines in the botnet last week, Tuesday saw just 227,493, up from 208,301 Monday. Over the weekend, Kaspersky saw a major dip in the number of active infected Macs, from a head count Friday, April 6, of 650,748, down to 248,723 Saturday, and then 237,103 Sunday.
Alex Gostev, Kasperskys chief security expert, says the number of bots counted here are active ones, and that the numbers dont reflect the total number of infected machines. Kasperskys online detection and removal tool is
available for download here
.
The drop in unique bots is most likely caused by efforts on the DNS [domain name system) levels. For example, a certain DNS could ban access to Flashback domains, which stops users from connecting to the malicious C&C servers, as well as our sinkhole, Gostev says.
But the floodgates have been opened for targeting Macs, and security experts say this is only the beginning. With more than 100 million Mac OS X users globally, we expect future threats to arise--weve already seen them increase, with attacks such as DNSChanger, Fake AV/Scareware, and the most recent version of the Flashback Trojan/Flashfake botnet. The spike in attacks started in September 2011 and has reached its highest peak in March 2012, Gostev says. Cybercriminals recognize Mac OS X is gaining market share, especially in developed countries, and we expect them to continue to create ways to infect users.
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Apple, Kaspersky Attack Massive Mac Trojan