You’ve probably experienced this: you’re in a restaurant, you open the menu, and instead of printed menus, there’s a black and white square with the message “Scan here.” You also see them on posters, bus stops, product labels, or even on a bar bill.
QR codes have become part of our daily lives because they are convenient and quick to use. However, despite seeming harmless, they can pose certain risks that we don’t always perceive at first glance.
What exactly is a QR code?
“QR” stands for Quick Response. Basically, it’s like a modern barcode that can store more information . When you scan it with your phone’s camera, it takes you directly to a website, video, app, or form.
So far, so good. The problem is that, precisely because they’re so easy to use, they’re also attractive to scammers. Every time you scan one, your phone opens a link that you can’t clearly see before clicking on it.
Where the risk might lie
Most QR codes are safe, but some can be altered. A scammer, for example, can print a sticker with a fake code and place it over a genuine QR code. Scanning it could redirect you to a malicious page that mimics the real one. Without realizing it, you could end up entering personal information or even your credit card details.
There is also QRishing, a combination of “QR” and “phishing,” which is a scam method. It’s a form of digital deception where attackers use QR codes to direct victims to fake websites or forms designed to steal personal information, credentials, or financial data. In some cases, the link may also lead to the download of a malicious application if the user clicks on it.
Warning signs
Before scanning a QR code, it’s worth taking a moment to carefully examine it. Some warning signs of fake QR codes include:
- The code appears to be pasted on top of another.
When you scan one in a public place, check if the sticker is fresh or out of place. As mentioned, scammers can place their own codes over the originals to redirect to fake websites.
- There is no context in the QR code.
If a QR code doesn’t explain its contents or who is offering it, it’s best not to use it. Legitimate codes are usually accompanied by text or a logo indicating their origin.
- It asks you for personal data
If the website that opens asks for information such as your card number or password, close it immediately. No trustworthy company requests sensitive data through a QR code.
It’s important to stay alert and look twice; it doesn’t take much. A few seconds of caution can help you avoid many headaches.
Protect yourself without becoming paranoid
It’s not about abandoning or disregarding QR codes, but about using them with a bit of common sense. Here are some simple tips:
- Use your camera’s built-in scanner or a reputable app.
- Check the address before opening it. If it looks strange or unusual, don’t click.
- Be wary of QR codes you receive by email. Some criminals use them to bypass security filters.
- Keep your system updated. Updates fix vulnerabilities that could be exploited by hackers.
When scanning QR codes using a public Wi-Fi network, such as in a café or airport, make sure your connection is encrypted. A VPN like Surfshark creates this encryption and helps keep your browsing private. This way, if a QR code redirects you to a fraudulent site, you reduce the chance of third parties intercepting your data or manipulating your connection.
Cases that have become common
Recent cases show that QR code fraud is becoming increasingly common in places like parking lots, gas stations, cafes, and restaurants. These scams have also evolved: fake concert posters with codes that lead to fraudulent ticket websites and social media profiles offering purported “technical support” via QR codes have been seen.
Although it may seem like something very unlikely, it’s important to know that this can happen anywhere. This is partly because scammers don’t need extensive knowledge; they simply need to print a QR code and place it somewhere visible to a large number of people.
What to do if you fall into the trap
If you ever suspect you’ve scanned a malicious QR code, don’t panic, stay calm and act quickly to mitigate the damage:
- Close the page immediately and do not download anything.
- Change your passwords if you have shared personal or banking information.
- Review your bank transactions and contact your bank if you see anything unusual.
- Run an antivirus scan on your device.
- Check your mobile settings , especially app permissions.
Take a few minutes to calmly check everything. This will ensure that everything is still under control and prevent a small problem from turning into something bigger.
A little common sense is worth its weight in gold.
Technology is advancing rapidly, and QR codes seem to be here to stay. We find them on menus, tickets, products, in museums, and more. They aren’t inherently dangerous, but they do require attention. A brief pause can save you from more than one problem and protect your data.
