A VPN encrypts the connection between your device and the VPN company, hiding your activity from the local network and your internet provider. Because most websites already use encryption, many people do not strictly need one for everyday browsing. It earns its keep on untrusted Wi-Fi, when traveling, or when you want more privacy from your internet provider. It does not stop scams, phishing or malware.
A VPN moves trust from your internet provider to the VPN company. Choose one with a clear privacy policy and an independent audit, and be very wary of free VPN apps that make money from your data.
What a VPN does, in plain English
Normally your device talks to websites through whatever network you are on: home Wi-Fi, a café hotspot, a hotel network. The network operator and your internet provider can see which sites you connect to, even when the content itself is encrypted.
A VPN (virtual private network) creates an encrypted tunnel from your device to a server run by the VPN company. Everything travels inside that tunnel, so the local network only sees that you are connected to a VPN. Websites see the VPN server’s address instead of your home address.
That is useful, but it is narrower than many ads suggest. The VPN company can now see what your internet provider used to see, and the website you visit still knows whatever you tell it when you sign in.
Public Wi-Fi: less scary than it used to be
The FTC’s current advice is that, because most websites now use encryption, connecting through a public Wi-Fi network is usually safe. Look for the padlock or https in the address bar. Most mobile apps also encrypt their traffic.
A VPN still adds a sensible layer when you use networks you cannot vouch for, such as airports, hotels or conference venues, especially if you travel often. It hides which sites you visit from that network and protects any older apps or sites that are not encrypted. If you only occasionally check email at a coffee shop, keeping your device updated and using https may be enough.
Good reasons to use a VPN
- Frequent travel and regular use of hotel or airport Wi-Fi.
- Privacy from your internet provider about which sites you visit.
- Shared networks such as dorms, apartment buildings with shared Wi-Fi, or co-working spaces.
- Remote work when your employer requires its own VPN. Use the one your employer provides for work systems.
What a VPN will not do
A VPN does not:
- stop phishing emails or fake login pages;
- remove or block malware you download;
- make you anonymous to sites you sign in to, or to social networks;
- protect you from tech support scams or fake invoices;
- fix a slow connection. It usually adds a little delay.
Your strongest everyday protections remain automatic updates, a password manager with unique passwords, two-step verification and built-in security tools.
How to choose a trustworthy VPN
| Look for | Why |
|---|---|
| A plain-language no-logs policy | Says what is and is not recorded about your activity. |
| Independent audits | A third party has checked the privacy claims. |
| Apps for every device you use | Windows, Mac, iPhone, Android, and the number of devices allowed at once. |
| A kill switch | Blocks traffic if the VPN drops, so nothing leaks outside the tunnel. |
| Clear renewal pricing and refund terms | Multi-year deals often renew at a higher price. |
| An established company with a real address | You are trusting it with your traffic. |
Be cautious with free VPNs. Running servers costs money, and some free services cover it with advertising or by collecting data. Some security suites include a VPN, which can be good value if you would use the rest of the suite.
Setting one up safely
- Download the app only from the provider’s website or your device’s official app store.
- Turn on the kill switch and the option to connect automatically on untrusted Wi-Fi.
- Pick a nearby server for speed unless you have a reason to choose another location.
- If a site or your bank blocks you, pause the VPN for that site rather than turning off your other protections.
Using a VPN to get around a service’s terms or local law can cause problems. Read the terms of the services you use.
Common questions
Do I need a VPN at home?
Not for basic safety, since most sites are encrypted. Some people use one at home for more privacy from their internet provider.
Is a free VPN safe?
Some are limited but honest; others make money from ads or data. Read the privacy policy and look for an independent audit.
Will a VPN slow my internet?
Usually a little, because traffic takes an extra hop. A nearby server reduces the effect.
Sources and further help
Official and primary sources used to check this guide. Menus, prices and plan details can change; confirm current terms with the provider.