YouTube served malicious advertisements, Trend Micro says
Malicious advertisements, some of which were displayed on YouTube, redirected more than 113,000 people in the U.S. to harmful websites in just a month, Trend Micro said Tuesday.
Although online advertising companies try to detect and block such ads from being circulated on their networks, bad ones sometimes get through. Such ads can be very productive for hackers. It can mean a large pool of victims if shown on a high-traffic website.
“This was a worrying development: Not only were malicious ads showing up on YouTube, they were on videos with more than 11 million views — in particular, a music video uploaded by a high-profile record label,” wrote Joseph Chen, a fraud researcher, on Trend Micro’s blog.