Blocking Tracking JavaScript at the Function Granularity

arXiv:2405.18385v1 Announce Type: new
Abstract: Modern websites extensively rely on JavaScript to implement both functionality and tracking. Existing privacy enhancing content blocking tools struggle against mixed scripts, which simultaneously implement both functionality and tracking, because blocking the script would break functionality and not blocking it would allow tracking. We propose Not.js, a fine grained JavaScript blocking tool that operates at the function level granularity. Not.js's strengths lie in analyzing the dynamic execution context, including the call stack and calling context …

arxiv blocking content blocking cs.cr function javascript privacy script scripts tools tracking websites