QR codes are everywhere. On restaurant tables, parking meters, email signatures, and utility bills. They are convenient, frictionless, and most people scan them without a second thought. Cybercriminals have taken notice, and a new wave of phishing attacks called “quishing” is now targeting small and midsize businesses across the Fox Cities and beyond.
What Is Quishing and Why Does It Matter?
Quishing is QR code phishing. Attackers generate malicious QR codes and place them in public spaces or embed them directly in emails. When an employee scans the code with their phone, it opens a counterfeit login page designed to steal Microsoft 365 credentials, banking information, or other sensitive data. The attack works because QR codes bypass most email security filters. The code is an image, not a link, so traditional link scanning tools do not catch it.
For businesses in Oshkosh, Neenah, Appleton, and Green Bay, the risk is real. SMBs often operate with lean IT teams and fewer layers of email protection, making them an attractive target for attackers who are increasingly automating these campaigns.
How Quishing Attacks Reach Your Business
Attackers use several entry points to deliver malicious QR codes:
- Email attachments: A QR code embedded in a PDF or image that appears to come from a vendor, shipping carrier, or internal colleague.
- Physical placement: Fake QR stickers placed over legitimate codes on parking meters, lobby check-in stations, or shared office printers.
- Invoice fraud: QR codes on fake invoices or payment reminders that direct employees to a credential harvesting page.
Three Steps to Defend Against Quishing
1. Train Your Team to Verify Before Scanning
Awareness is your first defense. Teach employees to inspect QR codes before scanning, especially when they appear unexpectedly in email. If a code claims to be from a known vendor or coworker, confirm through a separate channel before interacting with it.
2. Deploy QR-Aware Email Security
Modern email security platforms can detect QR code images embedded in message bodies and attachments. Ask your IT provider whether your current solution offers this capability. If not, this is a relatively low cost upgrade that closes a growing blind spot.
3. Create a Verification Policy
Establish a simple rule: any QR code received via email that requests credentials, payment, or sensitive information must be verified by phone or a direct reply to a known email address. Make this part of your standard security policy so employees know exactly what to do when something feels off.
Ready to Strengthen Your Security Posture?
Cyber threats evolve fast, but your defenses can keep pace. Computer Corner helps businesses across the Fox Cities build layered protection against modern attacks including quishing, phishing, and ransomware. Whether you need a security assessment, employee training, or a full stack of managed security tools, our team can help.
Contact Us to discuss your cybersecurity needs.