Quishing has exploded in 2025-2026, becoming one of the most rapidly growing attack vectors. QR codes are inherently trustworthy — attackers exploit this by embedding malicious URLs in fake parking tickets, BEC emails, and fake delivery notices. Email-based quishing bypasses traditional email security because URLs are hidden inside QR code images. Three primary attack patterns: fake parking ticket QR codes, BEC quishing campaigns, and package delivery QR codes. Defenses: email security with QR code analysis, mobile security apps that scan QR codes before opening them, and user education. Our guide includes real examples, red flags, and incident response procedures.