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Millions of Pornhub users were targeted with a malvertising attack that sought to trick them into installing malware on their PCs, according to infosec firm Proofpoint. By the time the attack was uncovered, it had been active “for more than a year”, Proofpoint said, having already “exposed millions of potential victims in the US, Canada, the UK, and Australia” to malware by pretending to be software updates to popular browsers.
In this particular attack, visitors to Pornhub were redirected to a website which claimed to be offering a software update for their web browser, including Chrome and Firefox, or to the Adobe Flash plugin. If they downloaded and opened the file it installed Kovter, taking over their machine and using it to click on fake adverts. Those fake clicks then generated real money for the websites the adverts are hosted on - typically spam-filled sites no normal user would ever visit.
In this particular attack, visitors to Pornhub were redirected to a website which claimed to be offering a software update for their web browser, including Chrome and Firefox, or to the Adobe Flash plugin. If they downloaded and opened the file it installed Kovter, taking over their machine and using it to click on fake adverts. Those fake clicks then generated real money for the websites the adverts are hosted on - typically spam-filled sites no normal user would ever visit.