An Israeli ad tech firm worked with spyware companies to infect devices, including at Al Jazeera, by simply showing users an online ad, according to a joint investigation by security researchers at Citizen Lab and Confiant. It's the first time researchers have found technical evidence of a zero-click attack - a form of hacking that requires no action by users - delivered through targeted advertising, as reported earlier by NBC News.
The ad firm, called Discover-Tech, presents itself as a typical online advertising agency, but researchers say it actually provides a pipeline for hacking groups to plant malicious ads across the web. It operat …