tldr - powered by Generative AI

• Browser extensions can be easily fingerprinted through static extraction or behavioral fingerprinting.
• Developers can stop static extraction by referencing images and CSS from websites or CDNs.
• Behavioral fingerprinting is more difficult to get rid of because it requires extra UI buttons and ad blockers.
• The middle way combines the best of both worlds by using CSS-based extension fingerprinting.
• Web accessible resources can be used to unmask browser extensions.
• Visible side effects of extensions can be used to fingerprint and track them.
• A system can automatically compare a page with and without an extension to detect changes that could be used to fingerprint.