What does a VPN do? 5 main functions explained (2026)

1. Hides your IP address

Your IP address is like your home address online. A VPN replaces it with the VPN server's IP, making it look like you're browsing from another location. This prevents websites and trackers from identifying you.

Example: You're in New York, connect to a London server — websites think you're in the UK.

2. Encrypts your data

VPNs scramble your data using complex algorithms (like AES-256). Even if someone intercepts your traffic, they'll see only gibberish. This is crucial on public Wi-Fi where hackers can easily snoop.

Think of it as sending letters in a sealed, unbreakable safe instead of a postcard.

3. Secures public Wi-Fi

Coffee shops, airports, hotels — public Wi-Fi is notoriously unsafe. A VPN creates an encrypted tunnel that protects your passwords, emails, and personal data from hackers on the same network.

4. Bypasses geo-restrictions

Netflix libraries vary by country. Some websites are blocked in certain regions. By connecting to a server in another country, you can access content as if you were there.

Example: Watch US Netflix from Europe, access BBC iPlayer from anywhere.

5. Stops tracking

ISPs, advertisers, and governments track your online activity. A VPN hides your browsing history from your ISP and makes it harder for advertisers to build a profile about you.