EOPEN’s CERTH-ITI MKLab team participated and succeeded to place second among thirteen teams in the first Copernicus Thessaloniki Hackathon, organised by Draxis environmental company from 29/11 to 01/12! Using the motto “Sustainable solutions for a sustainable way of living”, the Copernicus Thessaloniki Hackathon invited participants to think and build a prototype using Space Data & Earth Observation Services. Inspired by the EOPEN framework, MKLab team proposed a decision support system, named “Sack of Sand”, which monitors floods by analysing satellite images and social media data. The idea, which was praised for its clear concept, and the live demonstration of a system developed during the Hackathon resulted to winning the second prize!