German TV channel NDR has discovered a series of privacy breaches by Web Of Trust (WOT) one of the top privacy and security browser extensions used by more than 140 Million online users. The Web of Trust service collects extensive data about netizens’ web browsing habits via its browser add-on and then sells them off to various third party companies. NDR found that it was very easy to link the anonymized data to its individual users, which means it is easy to expose your real identity and every detail about you.
Source: https://thehackernews.com/2016/11/web-of-trust-addon.html