In an effort to mitigate a large class of potential cross-site scripting issues in Firefox, Mozilla has blocked execution of all inline scripts and potentially dangerous eval-like functions for built-in "about: pages" that are the gateway to sensitive preferences, settings, and statics of the browser.
Firefox browser has 45 such internal locally-hosted about pages, some of which are listed
Two widely used Adblocker Google Chrome extensions mimicking as — AdBlock and uBlock Origin — have been caught stuffing cookies in the web browser of millions of users to generate affiliate income from referral schemes fraudulently.
There's no doubt web extensions add a lot of useful features to web browsers, making your online experience great and aiding productivity, but at the same time,