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Why Attackers Love QR Codes and How to Scan Safely

Quick Response (QR) codes have become a common part of everyday life. From restaurant menus and event check-ins to payment systems and marketing promotions, scanning a QR code has become second nature for many of us. But with convenience comes risk, and cybercriminals are increasingly exploiting QR codes to launch scams and attacks.

Why Cybercriminals Love QR Codes

QR codes are appealing to attackers for several reasons:

  • They hide malicious links
    Unlike a visible URL, a QR code doesn’t show you where it leads until after you scan. Attackers use this to disguise links that direct users to phishing websites or malware downloads.
  • They exploit trust in physical placement
    Fraudsters can place fake QR code stickers over legitimate ones on posters, signs, or parking meters. People naturally assume the code is safe because it’s in a trusted location.
  • They bypass spam filters
    Email security tools are designed to detect suspicious links. By embedding a malicious link inside a QR code attached to an email or PDF, attackers can slip past filters.
  • They target mobile devices
    Most QR scans happen on smartphones, which often have weaker security protections compared to business computers. Once scanned, users may unknowingly give attackers access to credentials, personal data, or even payment information.

Common Types of QR Code Scams

  • Phishing Scams
    Attackers often create QR codes that lead to fake login pages designed to look like trusted platforms such as Microsoft 365, Google Workspace, or popular banks. For example, employees have scanned QR codes in emails claiming “Password Reset Required” that redirected them to a fake Microsoft sign-in page. Once credentials are entered, attackers gain full access to email, files, and contacts.
  • Payment Fraud
    Fraudulent QR codes have been found on parking meters, restaurant tables, and even concert tickets. One widespread scam involves criminals placing their own QR stickers over the original code on pay-to-park machines. Unsuspecting drivers scan and pay, not realizing the money is routed to the attacker’s digital wallet instead of the city or vendor.
  • Malware Delivery
    Some QR codes link directly to malicious downloads, especially on Android devices. A recent scam circulated QR codes on social media promising “discount apps” or “exclusive deals.” Scanning installed a hidden app that recorded keystrokes and stole financial data from mobile banking apps.
  • Credential Theft through MFA Scams
    More advanced scams involve QR codes that imitate multi-factor authentication processes. For instance, a QR code might claim to “verify your login” but instead reroutes the user to a malicious site that captures authentication tokens. This allows attackers to bypass security protections and gain long-term access to accounts.

How to Scan QR Codes Safely

The good news is you don’t need to stop using QR codes, just approach them with caution:

  1. Verify the source
    Only scan QR codes from trusted sources. Be cautious of codes on flyers, posters, or stickers in public spaces.
  2. Preview the link
    Many phone cameras or QR scanning apps show the URL before opening it. Check the web address carefully—look for misspellings, unusual domains, or anything that feels “off.”
  3. Avoid scanning from suspicious emails
    If you receive an unexpected QR code via email or text, treat it like a suspicious link. Confirm with the sender before scanning.
  4. Use mobile security tools
    Install mobile security software that can detect malicious websites and phishing attempts.
  5. Don’t provide sensitive information
    A legitimate QR code should not immediately ask for login credentials, payment information, or personal details.
  6. Look for tampering
    If a QR code looks like a sticker or overlay, it may have been placed over a legitimate code. Avoid scanning if it seems altered.

Final Thoughts

QR codes are a fast and convenient tool, but attackers are counting on quick scans and blind trust. By slowing down, checking the source, and taking a moment to verify where a QR code leads, you can stay one step ahead of scammers.

If you want to learn more about securing your devices and protecting your business from emerging cyber threats, our team at Braver Technology is here to help.

 

Braver Technology Solutions | WeMakeITWork@BraverTechnology.com
Boston 617.315.8515 | Taunton 508.824.2260 | Providence 401.484.7900

Jenn Gervais

Jenn Gervais is the Marketing Manager at Braver Technology, driving marketing strategies and brand growth. With over 14 years of IT administration experience, she provides expert guidance to clients while leveraging her skills in marketing, design, and business development. Jenn’s creativity and leadership help fuel Braver’s innovation and success.