- Free VPNs are often monetized by selling data, displaying aggressive advertising, or reusing your connection, which directly compromises your privacy.
- Many free services implement poor encryption, keep activity logs, and exhibit IP and DNS leaks, drastically reducing the promised protection.
- There have been documented cases of free VPNs turning users into part of botnets or including malware, with potentially serious legal and security implications.
- For regular use or with sensitive data, it is preferable to opt for a reliable paid VPN or a corporate VPN, along with good general security habits.
We live in a world where, unfortunately, There is no shortage of people with bad intentions.Just as there is police to set limits in real life, on the Internet we need tools and good habits To prevent anyone from messing with our data. We're careful not to connect to just any public Wi-Fi, we monitor what we download, and yet we often let our guard down with something as sensitive as a free VPN.
The age-old saying of “nobody gives away money for nothing” In the digital age, this has been reformulated as "if you don't pay for the product, you are the product." The same is true for free VPNs: in exchange for providing a free service, they gain something far more valuable than a few euros in monthly subscription fees. your browsing informationyour bandwidth and even the possibility of using your device for purposes you don't even suspect.
What is a VPN and what role does it play in your privacy?
To understand the dangers of having a free VPN installed, you first need to be clear about What exactly does a virtual private network do?A VPN creates an encrypted tunnel between your device (mobile phone, computer, tablet, etc.) and a remote server. All traffic leaving your device travels through this secure tunnel, making it appear to the rest of the internet that the connection originates from the VPN server, not your actual connection.
Without VPN, Your traffic travels in plain sight from your internet provider and anyone else with access to the network (for example, on a poorly configured public Wi-Fi). With a well-implemented VPN, all that traffic is encrypted, your communications and real IP address are hidden, and it's as if you're traveling on a private highway within the internet, isolated from everyone else.
In practice, a good VPN serves to protect passwords and sensitive data (online banking, social networks, stores), encrypt emails, chats or files you send, hide your real location, reduce advertising tracking and bypass geographical blocks to access content or services only available in certain countries.
The problem arises when that "tunnel" is controlled by a provider with a dubious reputation. All your traffic passes through their servers, which gives them Full visibility of which websites you visitHow long you're online, what services you use, and in some cases, even the possibility of manipulating or recording parts of that information. Therefore, installing any free VPN without reading the fine print is essentially putting your data in their hands.
Why a free VPN can end up being very expensive
Setting up and maintaining a serious VPN service is expensive: it requires server infrastructure, bandwidth, application development, security audits, and technical support. If you're not paying, it's because... The money comes in from another sourceAnd in the world of free VPNs, that "other place" is usually your data, your bandwidth, or your own device; as is the case with some test VPN.
Many free VPN services fund the platform through aggressive advertisingThey bombard you with ads within the app itself, insert banners into your browsing, or open pop-up windows. But that's just the milder side of it. The most lucrative business model is collecting your browsing history, usage patterns, and other technical data to sell to... data brokers and marketing companies, which pay very well for information with which to create detailed user profiles.
Not only are the websites you visit collected, but you can also be logged. the original IP addressthe time you spend in each placeThe time of day you usually connect or what services you use (streaming, banking, social media, etc.). Often all of this is described, with varying degrees of clarity, in the privacy policy or terms of service that almost no one reads.
This desire to generate revenue from the user leads many free VPNs to integrate tracking, adware, and even malware within their applications. Studies such as the one by the Australian organization CSIRO have detected that a very high percentage of free VPNs for Android included malicious code, most of them linked to advertising, but also components that are potentially dangerous for the safety of the device.
To top it all off, some of these VPNs artificially limit access. speed and bandwidthThey reduce the number of available servers to a few located in congested areas and offer poor or misconfigured encryption. The result is a slow experience, with constant interruptions and far less privacy protection than they promise in their marketing campaigns.
What does a free VPN provider actually gain?
The key question is: if a VPN service claims to be free, Where does he get his income from? There are several common methods. The first and most well-known is the sale of browsing data to third parties. Even if your connections are encrypted from your device to the VPN server, that server can still see which domains you visit, how much data you consume, and when. All of this information is packaged and sold to data intermediaries who cross-reference it with other sources to build highly valuable profiles.
Another form of monetization is the bombardment of ads embedded in the app and in your trafficSome providers exploit their control over your connection to inject advertising code into the pages you visit or redirect you to specific online stores (such as large marketplaces) without your permission. This has been documented in several technical analyses, which show how VPNs force visits to certain affiliate websites.
There's an even more worrying model: reselling your own internet connection. Certain free VPNs have been caught. turning its users into exit nodes For paying customers or other associated services. In practice, this means that third-party traffic goes out to the internet through your home IP address or your mobile phone. If someone commits a crime from that connection, suspicion will fall on you, because your line appears as the origin in the internet provider's records.
There are also services that use the free version, such as hook to offer a “premium” payment plan within the same platform. In these cases, the free version is usually severely limited in speed, data limits, or available locations, with the sole purpose of pushing you toward the paid plan. While this approach is less harmful than selling your data, it doesn't always guarantee that the paid provider is transparent about what it records.
Finally, it should be considered that some unscrupulous operators may try use your device as a gateway For malicious activities: installing components that allow them to take remote control, participate in coordinated attacks, or mine cryptocurrency at the expense of your CPU and battery. It's not common, but documented cases show that it happens.
Specific risks of having a free VPN installed
Beyond the business model, what's important for you are the practical risks you take by having a free VPN installed on your mobile phone, laptop, or tablet. One of the most serious is that They can keep a detailed record of your activityAlthough many services are sold as "no log", their internal policies then admit to storing IPs, timestamps, visited websites or even unique device identifiers.
When such records exist, they open the door to several problems: they can be shared with third parties, be required by authorities in certain countries with weak legal safeguards, or end up being leaked in a security breach by the provider itself. In all these scenarios, Your VPN usage history is exposed, the exact opposite of what you were looking for when you installed it.
Another common risk is that of DNS and IP address leaksIf the application is poorly designed, some requests may not go through the encrypted tunnel but directly, using your ISP's DNS servers. This means that both your provider and other parties could still see the websites you visit, even if you think you're protected by the VPN. Sometimes even your real IP address can be exposed on certain connections, completely negating the supposed anonymity.
From a performance standpoint, free VPNs usually have few servers, very overloaded And in limited locations. It's common for them not to let you choose your country and simply assign you one at random, or to offer only one or two free servers with extremely high latency. This translates into slow browsing, interruptions when streaming videos, unstable downloads, and problems using cloud services.
In extreme cases, these services cut costs by replacing robust encryption with outdated or poorly implemented algorithms. Weak or incorrectly configured encryption can give a false sense of security while It leaves gaps that an attacker could exploit. to intercept or modify your traffic. The worrying thing is that, from the average user's point of view, everything "seems to be working" and it's very difficult to detect the problem.
We must also mention the issue of pre-installed malwareAs the CSIRO study pointed out, around a third of the free VPNs analyzed for Android contained some type of malicious code, often related to aggressive advertising networks. But in other cases, it was software capable of collecting extra information from the device, sending data to unknown servers, or opening the door to future infections.
Real cases of free VPNs with shady practices
The theory may sound exaggerated, but real-world examples demonstrate that these risks are not mere paranoia. One of the most notorious cases was that of Hola VPN, a very popular service thanks to its easy installation as a browser extension and its promise to let you browse as if you were in almost any country in the world without paying a euro.
The problem was the fine print: when using Hola, users were giving up part of their bandwidth to another company called Luminati. This user network served as the basis for offering a paid service to third parties, who could use these residential connections for all sorts of purposes. The scandal erupted when it was discovered that a distributed denial-of-service (DDoS) attack had been launched against the website 8chan, leveraging the infrastructure of millions of computers using Hola.
In practice, those who trusted this free VPN ended up becoming part of a gigantic botnet Distributed worldwide, their computers and connections were used to attack a third party without their knowledge or consent. This incident perfectly illustrates the type of abuse that can occur when a "secure" service leverages its technical control over your communications for purposes completely unrelated to your interests.
This is not the only example. Analyses of free VPN apps for Android have revealed other worrying practices: from stealthy screenshots These included data sent to remote servers, as well as silent redirects to specific e-commerce pages to inflate visits or affiliate commissions. All of this runs in the background while the user thinks they are simply browsing securely.
These cases show that the real danger is not just the sale of anonymized data, but that They may not anonymize anything or may even steal information directly, if the app allows it. When you grant broad permissions to a VPN app on your mobile device, you're handing it a very powerful key over everything you do online.
Are paid VPNs automatically reliable?
It would be a mistake to think that, simply by paying, Any VPN is already 100% securePaid services are also businesses that try to maximize profits and, in some cases, may combine subscriptions with other business avenues, taking advantage of their privileged position over user traffic.
Therefore, before subscribing to a commercial VPN, it is advisable to Read the privacy policy carefully. and the terms of service. You need to check if they have a clear "no logs" policy (no keeping traffic records), if they have been externally audited by independent firms, in which country they are headquartered (and therefore what data retention laws apply to them), and how they respond when asked for user information.
Even so, even with a reputable paid VPN, you can never completely rule out the possibility that at some point commit any irregularity or become involved in a security breach. That's why it's important not to rely solely on a VPN for security and to maintain good habits: use strong passwords, enable two-step authentication, keep devices updated, and avoid suspicious downloads.
On the opposite side are VPN services that provide organizations to their employees or customersas part of the corporate infrastructure. In these cases, the goal of the VPN is not to make money by selling data, but to protect internal communications and provide secure remote access to company resources. Since there is no direct profit motive from the traffic, they are much less likely to engage in the bad practices typical of free commercial VPNs.
That doesn't mean a corporate VPN is a haven of absolute privacy (in fact, the company usually monitors usage for security purposes), but it does change the balance of incentives: There is no interest in exploiting your connection for third parties.but in ensuring that it performs its function reliably.
Technical and usage limitations of free VPNs
Beyond the security and privacy aspect, free VPNs also have other drawbacks. very annoying limitations in daily life which affect its actual usefulness. One of the most frequent is the limited number of locations: you may only have access to one or two countries, or even a single server that is automatically assigned, with no possibility of choosing.
If you need to connect from a specific country to use a geographically restricted service, these limitations make a free VPN practically useless. Ideally, you should be able to choose. among a wide range of locations to find the one that offers the best balance between proximity (low latency) and access to the content you are interested in, something that is rarely seen in free versions.
Speed is another major issue. Free VPNs tend to have servers overloaded with thousands of users sharing the same bandwidth. The result is endless downloads, videos stuck at low resolution, dropped video calls, and an experience that's nothing like what you'd get browsing without a VPN or with a properly sized service.
Many, moreover, establish very low monthly data limitsIt's common to see limits of a few gigabytes per month in the best cases, or even a few hundred megabytes in very limited free versions. As soon as you start streaming video or downloading a large file, you reach the limit and the VPN stops working or becomes almost unusable.
Finally, technical support for these services is usually nonexistent or extremely basic. If you have trouble connecting, notice unusual behavior, or want clarification on any aspect of their privacy policy, You probably won't get a response Or you might be assisted by an automated system with no real ability to resolve anything. This contrasts sharply with reputable paid VPNs, which typically offer support in multiple languages and direct contact channels.
Good practices and safer alternatives
If you need to use a VPN occasionally, the most sensible thing to do is limit the use of free services as much as possible For very specific, low-risk cases, it's important to understand that your privacy won't be completely protected. For more regular use (remote work, streaming, online banking, managing sensitive data, etc.), it's best to opt for a reliable paid provider or, if possible, a VPN provided by your organization.
Before choosing, it's a good idea to review a short checklist. A good VPN should have no activity logging policy Clear and verifiable, robust encryption (e.g., AES-256 with strong keys), well-implemented modern protocols, speed and bandwidth without artificial limits, and compatibility with all your devices (Windows, macOS, Android, iOS, Linux, router).
It also scores points if it offers sufficient simultaneous connections To meet the needs of your home or business, advanced features (such as P2P or port forwarding) if required, and reliable technical support, ideally in your language. The provider's reputation, published independent audits, and transparency regarding its headquarters and applicable legislation are other key factors.
Some commercial providers also complement the service with additional privacy guaranteesThese include strict policies against the collection of unnecessary data, infrastructure designed to prevent the storage of records, and protection under relatively favorable legal frameworks regarding privacy. It is important not to rely solely on advertising and to verify these claims.
Alongside the use of a VPN, it is essential to maintain good general digital hygiene: use password managers, activate two-step verification, keep your system and applications updated, be wary of suspicious attachments and links, and minimize the amount of personal information shared on online networks and services. The VPN is just one more piece of the puzzle. of the security puzzle, not a magic solution that fixes everything.
In the end, installing a free VPN because "it's just to get faster" or "to watch a blocked show" might seem like an innocent shortcut, but it comes with a lot of fine print that's almost never explained in marketing materials. When you weigh the potential benefits against the risks of data exposure, performance loss, malware, or even unwitting involvement in illegal activities, It's quite clear that cheap can end up being very expensive. in terms of privacy and security.
Passionate writer about the world of bytes and technology in general. I love sharing my knowledge through writing, and that's what I'll do on this blog, show you all the most interesting things about gadgets, software, hardware, tech trends, and more. My goal is to help you navigate the digital world in a simple and entertaining way.