Yahoo's banner adverts were infected with malware for a week before it was noticed, when hackers launched an attack on 28th July. The company said the ads had been targeted at people in Russia, Ukraine and other countries where Yahoo has advertising deals. Users simply had to visit the page to become infected, and it was not dependent on a user interacting with an ad.
Yahoo's banner adverts were infected with malware for a week before it was noticed, when hackers launched an attack on 28th July. According to Malwarebytes, the attack involved hackers buying ads on Yahoo's more popular websites, like news and sports, and targeted Windows users using older versions of Adobe Flash, downloading a malicious malware code onto their desktops. Users simply had to visit the page to become infected, and it was not dependent on a user interacting with an ad.