What Your Browser Knows About You

Browsers expose fonts, screen size, timezone, language, WebGL quirks, and plugin lists. Combined, they often uniquely identify you even without cookies—fingerprinting.

Local storage and service workers let sites persist identifiers. Clearing cookies alone may not clear everything.

Login managers help security but also reveal which sites you use if malware strikes—keep OS patched.

Hardening: use Tor or Firefox resist fingerprinting modes for sensitive research; avoid installing random extensions; use containers or profiles; clear site data for shady clicks.

Corporate browsers may install root certificates for inspection—understand employer policies.

HTTPS stops network snooping; it does not stop the site you intentionally visit from logging actions.

See privacy browsers and VPN explainer for related tools.