Good work. There are some hardening options that you may be able to glean from ArkenFox [1] and Betterfox [2]. Another addon to consider listing is CSS Exfil

Good work. There are some hardening options that you may be able to glean from ArkenFox [1] and Betterfox [2]. Another addon to consider listing is CSS Exfil protection [3a] CSS Exfil Test Site [3b]. [1] - https://github.com/arkenfox/user.js https://github.com/arkenfox/user.js [2] - https://github.com/yokoffing/Betterfox https://github.com/yokoffing/Betterfox [3a] - https://addons.mozilla.org/en-US/firefox/addon/css-exfil-protection/ https://addons.mozilla.org/en-US/firefox/addon/css-exfil-pro... [3b] - https://www.mike-gualtieri.com/css-exfil-vulnerability-tester https://www.mike-gualtieri.com/css-exfil-vulnerability-teste...