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What is a VPN and How Does it Work: A Simple Explanation

What is a VPN and how does it protect you online? We explain how VPNs work, what they hide and why you need one for safe private browsing today.

Michael

April 5, 2026
6 min read

The issue of privacy on the internet has never been more important. Hackers are smarter. ISPs are nosier. And Wi-Fi networks are more dangerous than ever. One of the easiest tools to use to remain secure is a VPN. But what is a VPN and how does it work? We dissect it all down below.

What is a VPN?

VPN is an acronym that means Virtual Private Network. It is a security application that will and conceal your actual IP address. When you use a VPN you send your data over an encrypted tunnel between your computer and a remote server. Anyone who attempts to intercept your traffic is shown nothing but gibberish.

Think of it like a private highway for your internet traffic. Instead of driving in plain sight where anyone can see you a VPN puts your data in an armored vehicle that no one can see inside.

According to Forbes 31% of all internet users worldwide now use a VPN. The number one reason given by 47% of the users and 46% access streaming content in different regions is privacy.

How Does a VPN Work?

Here is the step-by-step process:

  1. You open your VPN app and connect to a server
  2. Your device and the VPN server perform an encrypted “handshake” to verify identity
  3. All your outgoing data gets encrypted before it leaves your device
  4. The encrypted data travels through a secure tunnel to the VPN server
  5. The server decrypts your data and sends it to your destination
  6. Incoming data follows the same path in reverse

The encryption standard used by reputable VPNs is AES-256, the same grade used by banks and the military. It would take a computer millions of years to crack through brute force alone.

NordVPN uses AES-256 encryption across all its apps, meaning every step in that process is secured to a military-grade standard. Get NordVPN and protect every connection today.

What Does a VPN Hide?

A VPN hides the following from your ISP, third parties and hackers:

  • Your IP address and physical location
  • Your browsing history
  • Websites you visit
  • Files you download
  • Data you send and receive online

But a VPN does not hide activity on sites you are logged into. It also cannot block cookies or prevent browser fingerprinting. For full protection combine a VPN with a private browser and strong antivirus software.

Why Do You Need a VPN?

Laptop showing what is a VPN in action with active encrypted connection access from any location and secure internal network and company file access

Here are the most common reasons people use one:

  • Public Wi-Fi Safety: Coffee shops, airports and hotels are using unsecured networks. Your information can be hacked in a few seconds on such networks. Everything is encrypted by a VPN meaning that they cannot do anything with stolen data.
  • Streaming Geo-Restricted Content: Platforms such as Netflix display varying materials in various nations. A VPN allows you to establish a connection with a server in a different country and access the library of that country.
  • ISP Tracking: Your ISP monitors all your internet activity and is allowed to sell your Internet traffic to advertisers. At the source, a VPN prevents that.
  • Remote Work: Businesses have been using remote access VPNs to enable employees to access company files and internal networks safely from any location in the world.
  • Price Discrimination: Sometimes airlines, hotels and shopping sites will charge you differently, depending on where you are. VPN will help you change your location and get a better deal.

What Types of VPNs Are There?

Not all VPNs work the same way. Different types are built for different use cases, from individual remote workers to large enterprise networks.

Type

Best For

Remote Access VPN

Individual users and remote workers

Site-to-Site VPN

Connecting multiple office locations

SSL VPN

Browser-based access without extra software

Mobile VPN

Users who switch between Wi-Fi and cellular data

Double VPN

Maximum privacy through two encrypted servers

Most everyday users only need a remote access VPN available through apps like NordVPN or ExpressVPN.

What Should You Look for in a VPN?

When choosing a VPN here are the non-negotiables:

  • AES-256 encryption: anything weaker is not worth your trust
  • No-logs policy: the provider should not store records of your activity
  • Kill switch: cuts your internet if the VPN drops to prevent accidental exposure
  • Strong protocols: look for OpenVPN or WireGuard and avoid the outdated PPTP
  • Multi-factor authentication: adds another layer of login security

NordVPN checks every box on this list. AES-256 encryption, a verified no-logs policy, a built-in kill switch and NordLynx (WireGuard support) all in one app. Get NordVPN and browse with confidence.

Should You Use a Free VPN?

Comparison showing unsecure free VPN harvesting advertiser data versus a trusted VPN with verified no-logs policy and private server connection

We recommend avoiding free VPNs in almost every case. Many free services sell your browsing data to advertisers which defeats the entire purpose. Some have even been found injecting malware onto users’ devices.

The one exception is Proton VPN’s free tier. It has no speed limits, no data caps and a genuine no-logs policy.

Paid VPNs typically cost $5 to $15 per month or $40 to $200 per year on a long-term plan. That is a small price for genuine online privacy.

The Bottom Line

A VPN encrypts your internet traffic, hides your IP address and protects your data from hackers, ISPs and government surveillance. It is one of the most practical privacy tools available whether you are working from home, streaming content abroad or just browsing on public Wi-Fi.

Pick a reputable paid provider with AES-256 encryption, a no-logs policy and a kill switch. Turn it on. Stay private.

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