Key Takeaways
- A VPN encrypts your traffic and masks your IP address from websites and your internet provider.
- VPNs do not make you anonymous — your VPN provider can still see your activity.
- They are most useful on untrusted public Wi-Fi networks and for bypassing geographic content restrictions.
- VPNs cannot stop tracking via cookies, browser fingerprinting, or logged-in accounts.
- Choosing a VPN means transferring trust from your ISP to the VPN provider.
VPN (Virtual Private Network)
A VPN is a technology that creates an encrypted connection between your device and a server operated by the VPN provider. All of your internet traffic is routed through that server before reaching its destination, which hides your IP address from the websites and services you visit. Think of it as a secure, opaque tunnel for your data.
VPNs use encryption protocols such as OpenVPN, WireGuard, or IKEv2/IPSec to encapsulate data packets. The destination server sees the VPN server's IP address rather than the user's originating address.
How a VPN Actually Works
When you browse the internet without a VPN, your device connects directly to websites, and both your internet service provider (ISP) and the destination site can see your IP address — a numerical label tied to your location and account. A VPN inserts an intermediary: an encrypted tunnel runs from your device to a VPN server, and that server makes the final connection to the website on your behalf.
The result is twofold. First, the website sees the VPN server's IP address, not yours. Second, your ISP sees only encrypted traffic headed toward the VPN server — it cannot read what sites you're visiting or what data you're sending. For a deeper look at terminology like encryption and IP addresses, see our guide to key online privacy terms.
31%
Global internet users who have used a VPN
According to GlobalWebIndex data cited in multiple industry reports, roughly one in three internet users globally has used a VPN service.
Top reason
Security on public Wi-Fi
Survey research consistently identifies public Wi-Fi security as the leading reason consumers report adopting VPN services.
What VPNs Are Good For
VPNs offer genuine, practical benefits in specific situations:
- Public Wi-Fi protection: On open networks at cafés, airports, or hotels, unencrypted traffic is more easily intercepted. A VPN encrypts everything leaving your device, significantly reducing that exposure. Our article on public Wi-Fi risks explains exactly why these networks require extra caution.
- Hiding activity from your ISP: In the US, ISPs are permitted to collect and sell aggregated browsing data. A VPN prevents your provider from seeing which sites you visit.
- Accessing geo-restricted content: Because the destination server sees the VPN server's location, you can appear to be in a different country — useful for accessing services not available in your region.
- Reducing targeted surveillance on specific networks: VPNs are used by journalists, activists, and travellers in countries with restrictive internet environments to maintain access to information.
Verify No-Logs Claims Before Committing
A provider claiming a "no-logs" policy carries real weight only if it has been independently audited by a credible third party. Look for published audit reports rather than taking marketing language at face value. Jurisdiction also matters: providers based in countries with strong data protection laws or outside intelligence-sharing alliances may offer stronger structural protections.
What VPNs Cannot Do
The marketing around VPNs frequently overstates their capabilities, and understanding the limits is just as important as knowing the benefits.
VPNs do not make you anonymous. Your VPN provider can see all the same traffic your ISP previously saw. You are trusting a different company, not eliminating surveillance. Providers that claim to keep no logs may or may not be audited to verify that claim.
VPNs don't stop cookie-based or login-based tracking. If you're signed into Google, Facebook, or any other account, those services know exactly who you are regardless of your IP address. Advertisers also use browser fingerprinting — a technique that identifies your device by its unique configuration — which bypasses IP masking entirely. For more on these misconceptions, see common online privacy myths.
VPNs don't protect against malware or phishing. Clicking a malicious link or downloading an infected file is just as dangerous whether or not a VPN is active. These are endpoint threats, not network-level ones.
Choosing a VPN Means Choosing Who You Trust
Using a VPN doesn't eliminate the need for trust — it redirects it. Instead of trusting your ISP, you're trusting the VPN provider with a full view of your internet activity. This makes the provider's privacy policy, jurisdiction, and audit history important considerations.
Look for providers that publish independently verified no-logs audits, operate under clear privacy-protective legal frameworks, and use well-regarded open encryption protocols like WireGuard or OpenVPN. Free VPN services frequently monetize user data — sometimes the very data users believed they were protecting.
VPNs and HTTPS: Two Different Layers
Most websites today use HTTPS, which already encrypts data between your browser and the website — a VPN does not add a second layer of encryption on top of that end-to-end connection. What a VPN does is hide which websites you're connecting to from your ISP and mask your IP from the destination server. These are related but distinct privacy protections, and understanding the difference helps set realistic expectations.
A VPN is a useful tool when applied to the right problem. Used with realistic expectations, it meaningfully improves privacy in specific scenarios. Used as a blanket privacy solution, it creates a false sense of security that can lead to other risks being overlooked.