Tor Browser is a privacy-focused web browser that sends traffic through the Tor network and adds anti-tracking protections. By bouncing connections through multiple relays, it makes it harder for websites, ISPs, and local network observers to link a request to a real IP address. It also reduces browser fingerprinting, so users are less identifiable by device and browser details.
In cyber security, Tor Browser matters because it can protect journalists, researchers, and vulnerable users from surveillance, and it is also used to reach onion services that are only accessible through Tor. Its limits are important too: logging in, reusing identities, installing extensions, or enabling risky features can weaken anonymity. Attackers may try to deanonymize users through browser exploits, tracking scripts, or behavioral mistakes, while defenders use Tor Browser’s Security Level settings and cautious browsing habits to shrink the attack surface.