Within the framework of the 19th Spanish Meeting on Cryptology and Information Security (RECSI 2026), held at the University of La Laguna (Tenerife) from 17 to 21 March, researcher Diego F. Bustamante, from the Security and Auditing Group (GSyA) at the University of Castilla-La Mancha and lecturer at the Technical University of Ambato (Ecuador), presented the paper “QUILLAQUA: Layered Architecture and Security Digital Footprint in Agricultural IoT”.

The study addresses cybersecurity challenges in digital agriculture environments, characterised by low-power devices and limited connectivity. The proposal introduces QUILLAQUA, a sustainable cybersecurity framework based on edge computing, integrating defence-in-depth, encrypted communications, and local monitoring. As its main contribution, the work incorporates the Security Digital Footprint (SDF), a set of indicators designed to measure the energy impact of cybersecurity controls and support balanced decision-making between protection and consumption.

The proposal was positively received for its innovative approach, integrating cybersecurity, sustainability, and energy efficiency within the field of smart agriculture.