2.2 Attack Surfaces: Malicious Redirection and Interception Exploits
A comparative assessment of digital banking architectures and quick-response payment structures reveals fundamental differences in threat surface exposure. Digital banking systems predominantly channel transactions through secured client-server connections protected by end-to-end transport layer encryption, session management tokens, and multi-factor challenge-response mechanisms [5]. Conversely, quick-response payment models introduce an optical transaction medium that bridges physical displays and mobile optical sensors, creating opportunities for visual spoofing, malicious barcode replacement, and covert destination redirection [2]. While digital banking vulnerabilities cluster around session hijacking, credential harvesting, and man-in-the-middle attacks, quick-response interfaces remain vulnerable to static code tampering and unverified dynamic URI payloads. These architectural differences indicate that applying uniform security controls across both environments leaves critical attack vectors unaddressed. A comprehensive defensive posture requires integrating signed payload structures, automated cryptographic certificate checks, and contextual risk scoring tailored specifically to the physical-digital boundary of quick-response exchanges [2], [5].