Monday, November 21, 2011

Microsoft settles lawsuit against Czech hoster of Kelihos botnet

(CNET, October 26, 2011)

Microsoft had filed lawsuit in a federal court in Virginia against Dominique Alexander Piatti and his company Dotfree Group SRO of Czech Republic and 22 others for hosting the Kelihos botnet. The botnet was responsible for sending pharmaceutical and other spam mails, for harvesting e-mails and passwords, for fraudulent stock scams and for promoting sites dealing with sexual exploitation of children.  Subdomains were used to spread the MacDefender scareware. The botnet had about 41,000 infected computers worldwide and was capable of sending 3.8 billion spam mails per day.

The controllers of the Kelihos botnet leveraged the subdomain services of Dotfree Group.

In Microsoft's settlement with the domain owner, Piatti will delete or transfer to Microsoft all the subdomains used to operate the bonet.  They agreed to prevent misuse of subdomains and to establish a secure top level domain (TLD).

Microsoft's Digital Crimes Unit has been responsible for shutting down three botnets--- Waledac, Rustock and Kelihos.

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