QR Code Security & Privacy

안전한 QR Code 스캔: 소비자 가이드

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How to scan QR codes safely: URL preview checking, suspicious code indicators, and what to do if you scan a malicious code.

  
  

    
  








  
  

    
    
      
      
  1. 
        Safe QR Code Scanning: A Consumer Guide
      
    2. 
      
      
  2. 
        Before You Scan
      
    3. 
      
      
  3. 
        During the Scan
      
    4. 
      
      
  4. 
        After You Scan
      
    5. 
      
      
  5. 
        What to Do If You Scanned a Suspicious Code
      
    6. 
      
      
  6. 
        Key Takeaways
      
    7. 
      
    

  









  
  

  
  

    
    

      
Safe QR Code Scanning: A Consumer Guide


As QR codes become ubiquitous, knowing how to scan safely protects you from phishing, malware, and privacy violations.


Before You Scan


Check the physical context: Is the QR code in an expected location? A QR code on a restaurant table is normal. A random QR code sticker on a lamp post is suspicious.


Inspect for tampering: Look for signs of sticker overlays — raised edges, different paper or print quality, codes placed over other codes.


Consider the request: Does scanning make sense in context? A "scan to pay" QR on a parking meter is reasonable. A "scan to claim your prize" QR on a random flyer is a red flag.


During the Scan


Preview the URL: Both iOS and Android show the decoded URL before opening it. Always check:
- Is the domain familiar and expected?
- Does it use HTTPS?
- Does the domain have a suspicious structure (e.g., paypa1.com instead of paypal.com)?
- Is it a URL shortener? (Less trustworthy because you cannot see the destination)


Use your built-in camera: The native camera app on iOS and Android is safer than third-party scanner apps, which may have their own privacy issues.


After You Scan


Check the page: Before entering any information, verify you are on the expected site. Look for:
- Valid SSL certificate (lock icon)
- Correct domain name in the address bar
- Professional page design (though skilled attackers create convincing fakes)


Never enter sensitive data (passwords, credit card numbers, social security numbers) on a page reached via QR code unless you are certain of the destination.


What to Do If You Scanned a Suspicious Code


    

  1. Close the page immediately — do not interact with it
    2. 

  2. Clear your browser cache and cookies
    3. 

  3. If you entered credentials, change those passwords immediately
    4. 

  4. If you entered payment information, contact your bank
    5. 

  5. Run a security scan on your device
    6. 

  6. Report the suspicious QR code to the location owner
    7. 



Key Takeaways


    

  • Check the physical context and inspect for tampering before scanning
    • 

  • Always preview the URL before opening — both iOS and Android support this
    • 

  • Use the native camera app, not third-party scanner apps
    • 

  • Never enter sensitive data on pages reached via QR code without verification
    • 

  • Report suspicious QR codes to the location owner
    •