Internet advertisement networks provide hackers with an effective venue for targeting wide range computers through malicious advertisements. Previously it was reported by some security researchers that Yahoo’s online advertising Network is one of the top ad networks were being abused to spread malware by cyber criminals.
Recent report published by Fox-IT, Hackers are using Yahoo’s advertising servers to distribute malware to hundreds of thousands of users since late last month that affecting thousands of users in various countries. “Clients visiting yahoo.com received advertisements served by ads.yahoo.com. Some of the advertisements are malicious,” the firm reported.