Shutdown of Kelihos botnet doesn’t mean Mac malware is over

It was heard much discussion about Kelihos botnet and its successful shutdown this week. Such operations, like operation codenamed “Operation b79”, are always good news from Microsoft and its Active Response for Security (MARS) group.

This time Microsoft received a permission to disable domain and subdomains that were used for malicious purposes, like for all sorts of botnet control, fake anti-virus, spam sites and other. Some security experts claim that Mac Defender malware has also been hosted on domains, so the shutdown can be expected to stop cyber criminals from targeting OS X users.

However, it seems like these expectations will have no reason and Mac users should keep their anti-virus software up-to-date – two new Trojans for OS X have been noticed. These trojans, which may join botnets and can be used for stealing sensitive data, are designed to look like a PDF file and update for the Flash Player.

So, no matter that domains are closed, Mac users should think about their machine’s security very seriously. In addition, it should be remembered by any other computer owner. Install licensed anti-virus and anti-spyware version on your computer and keep them up-to-date.


About the author

 - Passionate web researcher

I have been working with project for a while now and I would like to think that our research team has managed to raise awareness about cyber security. I study the newest infections, help out with manual instructions and answer questions that our users might have.


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