Free VPNs: The Hidden Costs

When the product is free, you're usually the product being sold.

TL;DR: Free VPNs need to make money somehow. In 2024 testing, 20% of free VPNs contained malware. 88% of free Android VPNs leak user data. 71% share data with third parties. By 2025, projections suggest 60% could be actively selling your data. One free VPN service was part of a massive botnet dismantled by the DOJ. Seven "no-log" free VPNs exposed 1.2 terabytes of user data. A free VPN doesn't protect your privacy — it often monetizes it. If you can't afford a paid VPN, self-host one for free instead.

The Economics Are Simple

Running a VPN costs money. Servers, bandwidth, development, support — none of it is free [1].

How paid VPNs work:

  • You pay $3-12/month
  • They use that money for servers and development
  • Their incentive is to provide good service so you keep paying

How free VPNs work:

  • You pay nothing
  • They still need money for servers and development
  • That money comes from... where?

The options for free VPN revenue:

  1. Collect and sell your browsing data
  2. Inject ads into your browsing
  3. Use your device as part of a botnet or proxy network
  4. Upsell you to a paid tier (legitimate freemium model)
  5. Include malware that profits in other ways

Option 4 is the only ethical one. Research shows most free VPNs use options 1-3 or 5.

What the Research Shows

This isn't speculation. Researchers have tested free VPNs extensively [2].

2024 findings:

  • 20% of free VPNs flagged as malware by antivirus scanners in 2024 testing
  • 88% of free Android VPNs leak user data — defeating their entire purpose
  • 71% share personal data with outside organizations
  • 2.5× spike in fake VPN apps reported by Kaspersky in Q3 2024
  • 43% of VPN users rely on free services that may be tracking them

Projections for 2025:

  • 80% of free VPN apps will embed tracking
  • 60% could be selling user data

Notable incidents:

  • Seven "no-log" Hong Kong-based free VPNs exposed 1.2 TB of user data online (2020)
  • US Justice Department dismantled a massive botnet spread largely through free VPN apps (2024)

What Free VPNs Do With Your Data

Data collection:

  • Browsing activity and history
  • Search queries
  • Your real IP address (yes, the thing they're supposed to hide)
  • Physical location
  • Device information
  • Time and duration of sessions

What happens to that data:

  • Sold to advertising networks
  • Sold to data brokers
  • Used for targeted advertising within the app
  • Shared with "partners" (often without clear disclosure)
  • Potentially accessible to governments depending on jurisdiction

Ad injection:

Some free VPNs insert their own ads into web pages you visit. You think you're seeing the website's ads, but the VPN swapped them for their own. This generates revenue for the VPN provider while degrading your browsing experience — and potentially exposing you to malicious advertisements.

Bandwidth selling:

Some free VPNs use your device as an exit node for other users' traffic, effectively turning you into part of their VPN network. Your internet connection is used by strangers. If they do something illegal, the traffic comes from your IP address.

Security Issues Beyond Data Collection

Weak or no encryption:

The whole point of a VPN is encrypted traffic. Many free VPNs use outdated or weak encryption — or none at all. Your traffic might as well be unprotected.

IP and DNS leaks:

A VPN that leaks your real IP or DNS requests defeats its purpose. The 88% leak rate for free Android VPNs means you think you're protected when you're actually exposed.

Malware:

20% of free VPNs flagged as malware isn't a small problem. That malware can:

  • Steal passwords and credentials
  • Log keystrokes
  • Access your camera and microphone
  • Turn your device into a botnet node
  • Install additional malware

Man-in-the-middle attacks:

A VPN sits between you and the internet. A malicious VPN can intercept, read, and modify your traffic — the exact attack a legitimate VPN is supposed to prevent.

Are Any Free VPNs Safe?

Freemium models from reputable companies:

Some legitimate VPN providers offer free tiers with limited features:

  • ProtonVPN Free — Limited speeds and servers, no data caps, from a reputable privacy company
  • Windscribe Free — 10GB/month, limited servers
  • Atlas VPN Free — Limited data, limited servers

These work because:

  • They're loss leaders — designed to convert you to paid
  • The company has a reputation to protect
  • They're transparent about limitations

How to identify safer free options:

  • From a company with paid plans and established reputation
  • Clear privacy policy stating no logging
  • Independent security audits
  • Open-source clients (can be verified)
  • Funded by legitimate means (privacy advocacy, freemium model)

Red flags:

  • No paid tier (how do they make money?)
  • Too good to be true (unlimited everything for free?)
  • Unknown company with no track record
  • Vague privacy policy or no policy at all
  • Lots of ads in the app
  • Requests excessive permissions

Better Alternatives

Option 1: Pay for a VPN

  • Quality VPNs cost $3-12/month
  • That's less than a streaming subscription
  • You get what you pay for — security and privacy
  • See: VPN Strategy Guide

Option 2: Self-host a VPN for free

  • Use cloud provider free credits (DigitalOcean $200, Vultr $100, etc.)
  • Run your own WireGuard or OpenVPN server
  • No third party sees your traffic
  • More technical, but actually private
  • See: Self-Host a VPN Using Free Credits

Option 3: Use Tor for anonymity

  • Free, open-source, no company to trust
  • Traffic routed through multiple volunteer nodes
  • Slower than VPN, but no payment needed
  • Better for anonymity than most VPNs anyway
  • See: Tor Basics Guide

Option 4: Use reputable freemium tier

  • ProtonVPN Free for basic privacy needs
  • Accept the limitations (speed, servers)
  • Upgrade if you need more

Is Your Current VPN Trustworthy?

Questions to ask:

  • How does this company make money?
  • What's their privacy policy actually say?
  • Where are they based? (jurisdiction matters for data requests)
  • Have they been independently audited?
  • Is the client open-source?
  • What's their track record? Any data breaches or controversies?

Test for leaks:

  • Connect to your VPN
  • Visit ipleak.net or browserleaks.com
  • Check if your real IP or DNS servers appear
  • If they do, your VPN is leaking — switch immediately

The Bottom Line

Free VPNs exist to make money. If you're not paying, you're generating revenue another way — usually by being the product.

The numbers don't lie:

  • 20% contain malware
  • 88% leak your data
  • 71% share data with third parties
  • 60% projected to sell user data by 2025

A free VPN doesn't just fail to protect your privacy — it often actively harms it. You'd be better off using no VPN than a malicious one that logs everything, injects ads, and potentially infects your device.

Your options:

  1. Pay for a reputable VPN (~$5/month)
  2. Self-host one for free using cloud credits
  3. Use Tor for anonymity
  4. Use a reputable freemium tier (ProtonVPN Free)

What you shouldn't do: trust a random free VPN from the app store with your traffic, passwords, and browsing history.

There's no such thing as a free lunch. There's definitely no such thing as free privacy. If something costs money to run and they're not charging you, figure out what they're really selling. It's probably you.

References

  1. Tom's Guide — 60% of Free VPNs Could Be Selling Your Data by 2025
  2. Tom's Guide — Are Free VPNs Safe?
  3. Max Browser — Free VPNs and Data Collection: Hidden Risks
  4. UpGuard — VPN Security Concerns in 2025
  5. Surfshark — Are Free VPNs Safe to Use?
  6. Security.org — 2025 VPN Trends, Statistics, and Consumer Opinions