Abstract

URL is the most commonly tracked piece of information, the innocent choice to structure a URL based on page content can make it easier to learn a users’ browsing history, address, health information or more sensitive details. While you as a user normally browse the internet Local Sheriff works in the background and helps you identify what sensitive information(PII—Name, Date Of Birth, Email, Passwords, Passport number, Auth tokens.) is being shared/leaked to which all third-parties and by which all websites. The issues that Local Sheriff helps identify:

• What sensitive information is being shared with whom?
• Which companies are own these third parties?
• What can they doing with this information? EG: de-anonymize users on the internet, create shadow profiles.
• Data points that can be used for tracking a user across the web.
• Insights into which companies know what about you on the internet.

Local Sheriff can also be used by organizations to audit:

• Which all the third-parties that are being used on their websites.
• The third-parties on the websites are implemented in a way that respect user’s privacy and sensitive data is not being leaked to them.

Local Sheriff is a browser extension that can used with Chrome, Opera, Firefox, Brave, Cliqz.