The “Flashback” virus that originated on a series of WordPress blogs
and went on to infected more than 600,000 Mac computers
last month may have generated its creators thousands of dollars each day. According to antivirus software firm Symantec, the Flashback malware has been generating revenue for its authors by hijacking users’ ad clicks, and due to the widespread nature of the infection, the authors could have been generating up to $10,000 per day. “Flashback specifically targets search queries made on Google and, depending on the search query, may redirect users to another page of the attacker’s choosing, where they receive revenue from the click,” the firm explained, adding that Google never receives the intended ad click. Symantec notes that ad-clicking Trojans are nothing new and a botnet of 25,000 infections could generate an author up to $450 per day.