The proxy & privacy glossary

An antidetect browser lets you run many isolated browser profiles, each with its own unique fingerprint, so multiple accounts can operate without being linked together.

An Autonomous System Number is a unique identifier assigned to a network operator, letting anti-bot systems tell residential ISPs apart from data centers.

A backconnect proxy gives you a single gateway endpoint that transparently rotates you through a large pool of IPs behind the scenes.

A browser fingerprint is a unique profile built from your device and browser attributes that sites use to identify and track you even without cookies.

Canvas fingerprinting identifies a device by the tiny rendering differences produced when a browser draws hidden graphics using the HTML5 canvas.

A CAPTCHA is a challenge that tries to tell humans and bots apart, commonly shown when a site detects automated or suspicious traffic.

A datacenter proxy routes traffic through IP addresses hosted in a data center rather than on a consumer connection, offering high speed and low cost at the price of easier detection.

A DNS leak happens when your device sends DNS queries outside the VPN tunnel, exposing the sites you visit to your ISP despite using a VPN.

Geo-blocking restricts access to online content based on the user's geographic location, usually determined from their IP address.