A QRazy clever scam. [Research Saturday]
Brief
This week, we are joined by Juliana Testa , Senior Security Engineer from 7AI , sharing their work on "Quish Splash - When the QR Code Is the Weapon: A Multi-Wave Phishing Campaign That Slipped Past Every Filter."
A large-scale “quishing” campaign used QR codes embedded in image attachments to hide phishing URLs, allowing 28 out of 33 emails to bypass SPF, DKIM, DMARC, and Microsoft Defender and land directly in inboxes.
Each recipient received a unique QR code and tracking ID, defeating traditional detection methods and enabling attackers to scale the campaign to over 1. 6 million emails across multiple organizations while shifting execution to less-secure mobile devices.