Quick Answer A sticky session is a proxy setting that keeps the same IP address assigned to you for a set period of time — usually 5 to 30 minutes, sometimes up to 24 hours — instead of rotating to a new IP on every request. It lets you complete multi-step actions like logging in,
Quick Answer A CAPTCHA (“Completely Automated Public Turing test to tell Computers and Humans Apart”) is a security challenge websites use to confirm you’re a real person, not a bot. The three dominant CAPTCHA systems in 2026 are Google reCAPTCHA, Cloudflare Turnstile, and hCaptcha— most of which now run invisibly in the background by analyzing
A headless browser is a real web browser — usually Chromium or Firefox — that runs without a visible window. It parses HTML, executes JavaScript, and fires events just like the browser on your screen, but you control it programmatically through code instead of clicking with a mouse. The three dominant headless browser tools in
Quick Answer A browser fingerprint is a unique identifier that websites build by combining dozens of small details about your browser and device — screen resolution, fonts, time zone, graphics card, audio processing, language, plugins, and more. No single detail is unique, but combined they form a digital signature that’s accurate enough to identify you
Quick Answer Geo-targeting is the practice of delivering different content, ads, prices, or restrictions to users based on their physical location. Websites detect where you are through your IP address, GPS, Wi-Fi network, or mobile carrier data — then serve a version tailored to that location. It’s why Netflix shows different libraries in different countries,
Quick Answer A reverse proxy is a server that sits in front of one or more web servers and handles incoming traffic on their behalf. Instead of users connecting directly to the origin server, they connect to the reverse proxy — which then decides how to route, filter, cache, or load-balance the request. The reverse