How threat actors use QR codes to bypass corporate email gateways, and how security analysts decode and analyze destination URLs.
Email security gateways scan text and HTML links, but frequently treat images as inert attachments. Attackers embed QR codes in PDF and image attachments directing victims to mobile credential-harvesting pages.
Extracting the QR payload allows security teams to check URL redirects, examine WHOIS registration data, and block phishing endpoints across perimeter firewalls.
Security Analyst and Aspiring Security Engineer passionate about digital image forensics, OSINT research, CTF steganography challenges, and client-side application security.
Step-by-step forensic tutorial on Otsu adaptive binarization, white-on-black color inversion, and morphological scratch repair.
A technical guide on optical pre-processing, 4-point perspective unwarping, and morphological closing for physical evidence extraction.