How to Check If a QR Code is Safe

Jacob Wilson
How to Check If a QR Code is Safe

Table of Contents

QR codes are an amazing way to get information quickly, but like any technology, they can come with safety risks if you don’t act cautiously. While businesses can get a lot of use out of their codes, scanning random codes out in the world comes with risks similar to clicking an unknown link in a fishy email. Scammers can manipulate a QR code to send anyone who scans it right to a malicious website.

Everywhere from businesses to classrooms are finding uses for QR codes, but you can’t be sure it’s safe if you don’t know who put up a QR code. That’s why it’s best to follow the best safety practices to prevent yourself from scanning a fraudulent QR code.

Understanding QR Codes

A QR code, or Quick Response code, is a two-dimensional barcode that can be scanned by a smartphone camera to access information. Initially used primarily in the automotive industry, QR codes began to be adopted in the early 2000s across various sectors, including manufacturing, logistics, and retail, due to their efficiency and data capacity. 

By the 2010s QR codes became a popular tool in marketing and advertising, providing a bridge between physical and digital media. Businesses and consumer technologies continue to use QR codes to link to websites, promotions, and contact information. Now in the 2020s QR codes are a widely used way to quicken the process of linking information. Their integration with eSIM profiles has been one of the newer but highly usable methods of putting this technology to work.

Why QR Codes Can Be Risky

Cybercriminals can exploit QR codes by replacing legitimate ones with malicious versions or creating fake codes, especially in public places or via email. Scanning these malicious codes can lead users to phishing sites, prompt harmful downloads, or capture sensitive information, making it essential to verify QR codes before scanning, particularly in untrusted locations.

When users scan a malicious QR code, they can be redirected to phishing sites that mimic legitimate websites, prompting them to enter sensitive details like login credentials or credit card information. Alternatively, a bad QR code could link to files that automatically download malware onto the device, compromising security. This malware can then monitor user activity, steal personal data, and even track financial transactions, putting personal and financial information at risk. Cybercriminals exploit QR codes’ ease of access, as many users may not suspect these quick scans as potential threats.

Always remember the best cyber security practices when dealing with QR codes or any other link. Don’t use any that seem or are attached to anything strange, and never trust fraudulent emails.

Signs a QR Code Might Be Unsafe

There are several signs that a QR code might be unsafe, and sometimes you have use your best judgment. There are some key components of a fraudulent QR code to keep an eye for, including:

  • Unknown Sources: As with all cybersecurity risks, never trust a QR code sent to you from a random or untrusted source. For QR codes this could mean random posters, links in unsolicited emails, or even underneath more reputable QR codes.
  • Location of the QR code: Be cautious with QR codes in odd places without any clear context such as random stickers on street signs, subway stations, or even boards with other QR codes if they lack context
  • Weird or Suspicious URLs: If the URL preview shows a suspicious-looking domain,  don’t click it.

Generate Powerful Dynamic QR Codes

Effortlessly create, customize, and monitor dynamic QR codes.

How to Check If a QR Code is Safe Before Scanning

Here are some simple steps to follow to minimize your risk of scanning a scam QR code:

Check the Source: Only scan codes from well-known, trusted sources (e.g., official websites, verified businesses, reliable individuals).

Use QR Code Scanner Apps with URL Previews: Choose a scanner that shows the URL before opening it. This gives users a chance to verify the destination before interacting with it.

Verify the URL: After scanning, if you’re unsure about the URL, you can check it using services like:

  • Google Safe Browsing – Checks if the site has been flagged for malware or phishing.
  • VirusTotal – Scans URLs for potential risks and flags any suspicious activity.


Check for HTTPS:
If the code directs you to a website, ensure the URL begins with “HTTPS” to indicate it’s a secure site. This doesn’t guarantee safety, but it’s an important first step.

Best Secure QR Code Scanners

There are several options for QR code scanners that offer enhanced safety features, like URL previews, security checks, and built-in warnings. It’s best to research each option in-depth to see what their safety track records are, but here are some options:

  • Kaspersky’s QR Scanner: This app scans the QR code and checks the link for security risks before directing the user to it.
  • Norton Snap: Provides instant feedback on whether the URL is safe by checking against Norton’s security database.
  • Trend Micro QR Scanner: Highlights suspicious URLs and helps prevent phishing attempts by showing warnings if the link looks shady.
  • Avira QR Code Scanner: Another security-focused app that scans for malicious links and provides URL previews.
  • NeoReader QR & Barcode Scanner: Offers easy URL previews and can scan any QR code without automatically opening the link.

What to Do If You’ve Scanned a Malicious QR Code

Even with a good QR code scanner and best safety practices in mind people can still make mistakes. If you scan a QR code and realize it’s fraudulent or a scam, there are still steps you can follow to minimize the damage:

  • Close the Site Immediately: If you suspect the site is unsafe, exit it immediately without clicking anything.
  • Run a Security Scan: Use your device’s antivirus or security software to scan for potential malware or suspicious activity.
  • Change Passwords: If you’ve entered sensitive information (e.g., login credentials or payment details), immediately change your passwords and monitor your accounts for suspicious activity.

Best Practices for Safe QR Code Usage

With everything else in the article in mind, the best practices to keep yourself safe when handling QR codes are as follows:

  • Always be cautious when scanning QR codes from unknown sources, especially in public places or when sent through email.
  • Regularly update your smartphone’s security features to protect against emerging threats.
  • Use a secure QR code scanner with URL preview and security features.
  • If something doesn’t feel right, don’t scan the code. Always think twice.

Conclusion

While QR codes are a wonderful technology that can help businesses, classrooms, and the lives of everyday people they are not without risks. Every technology that handles information needs to be treated with similar safety standards. If you wouldn’t click on a strange link from a person you’ve never heard of before, you wouldn’t scan a random QR code on the subway with no context behind it.

However, just like with fraudulent links, some scam QR codes can be dressed up to look more legitimate. That’s why best practices mixed with secure scanning tools together will help minimize any risks. If nothing else, just remember to always question anything that asks for your personal information no matter how legitimate it looks.

Generate Powerful Dynamic QR Codes

Effortlessly create, customize, and monitor dynamic QR codes.

See more of Jacob’s posts