Matute Villegas, M.C., Huarancay Huaranga, J.E. and Quispe Ticllacuri, J.A. (2026) “Biometric-Gated SD-VPN Gateway for Secure Remote PLC (Siemens S7-1200) Control with Microsegmentation and Conversational Monitoring”, LACCEI, 1(14). doi:10.18687/LACCEI2026.1.1.2572.