Last updated: October 2026 Β· 3 min read
A VPN (Virtual Private Network) creates an encrypted “tunnel” between your device and a VPN server. Websites see the VPN server’s address instead of yours, and people on the same Wi-Fi cannot read your traffic.
How a VPN works
- You install a VPN app and connect to a server.
- The app encrypts everything leaving your device.
- Encrypted data travels to the VPN server.
- The server decrypts it and sends it to the website.
- Replies travel back the same way.
When a VPN is useful
- Using public Wi-Fi at airports, cafΓ©s and hotels.
- Connecting securely to your office network from home (corporate VPN).
- Adding privacy from your network provider.
- Accessing your own home services while travelling.
What a VPN does not do
- It does not make you anonymous: the VPN company can see your activity.
- It does not protect you from phishing or malware you download yourself.
- It does not make illegal activity legal.
Free vs paid VPNs
| Free VPN | Paid VPN | |
|---|---|---|
| Speed | Often slow, limited data | Faster, more servers |
| Privacy | May log or sell data, show ads | Clear no-logs policies (check audits) |
| Best for | Occasional light use | Regular use, work, travel |
Are VPNs legal in India?
Yes, using a VPN is legal in India. Under CERT-In directions issued in 2022, VPN service providers operating in India must keep certain customer records, and some providers moved their servers out of India as a result. Using a VPN to commit fraud, access banned content or break the law remains illegal. Companies widely use VPNs for remote work.
How to choose a VPN
- Look for strong encryption (WireGuard or OpenVPN protocols).
- Check for an independent audit of the no-logs claim.
- Use a kill switch so traffic stops if the VPN drops.
- Prefer well-known providers over unknown free apps.
Frequently asked questions
Does a VPN slow down internet?
Slightly, because data is encrypted and travels further. Good VPNs keep the slowdown small.
Should I use a VPN for banking?
Banking apps already use encryption. A VPN adds protection on public Wi-Fi, but some banks may block unusual VPN locations.
Is a VPN needed at home?
Usually not for security on a protected home Wi-Fi, but some people use it for privacy.
Keep exploring
- Cyber safety basics
- How the internet works
- What is an IP address?
- More Technology articles on Tiwaripedia
Facts are based on widely accepted official, scientific and historical sources at the time of writing. Spotted something that needs updating? Let us know.
