How you landed on a page, e.g., by entering the address directly, using a bookmark or clicking a link, A unique user identifier (UID) generated by the extension for tracking, Full URL of the page you are on, including query part and anchor data, Palant had found out that he extensions are sending a large amount of data about users' browsing habits, to the company's servers - 'far beyond what's necessary for the extension to function.' Which extensions have been caught? Both of these are primarily online security extensions and are designed to warn users when they visit a malicious or phishing website. When users install Avast or AVG antivirus on their PCs, the software automatically installs their respective add-ons on the users' browsers. AdBlock Plus creator Wladimir Palant has identified four such extensions offered by Avast and its subsidiary AVG installed that have been caught collecting a lot more data on its millions of users than they are intended to, including your detailed browsing history.
And, that's what some unscrupulous elements are taking advantage of. The problem, however, is that at times we download so many extensions on a browser that we don't even remember most of them. Extensions have always been an important part of user experience.