Police in Bulgaria have arrested eight individuals believed to have been running an online phishing operation.
The group is allegedly part of an international criminal network involved with financial fraud and data theft over the internet. The suspects were apprehended after raids in three cities.
Microsoft assisted in the arrest of the group through its investigation and technical support, the company said in a statement.
The group sent out spam messages which appeared to come from Microsoft's MSN service, attempting to lure recipients to a fake MSN website.
The site asked users to update their account data, including credit card numbers and Pin data. The operation netted about $50,000.
Microsoft stated that it actively hunts down online criminals in an effort to curb cyber-crime. The company played a major role in the capture of the author of the Zotob worm in August last year.
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