The BigDataEurope project aims to integrate big data, software, and communities to address societal challenges in Europe. The EU SatCen is building a Secure Societies community, eliciting big data requirements, and implementing a Space and Security pilot for the project. The Secure Societies pilot uses Sentinel-1 satellite imagery, Twitter data, and Reuters news articles to detect changes and events. The change detection workflow analyzes Sentinel-1 imagery to detect areas with changes, while the event detection workflow monitors news and social media to cluster events and verify locations. The pilot is being optimized to improve scalability, add cybersecurity mechanisms, and enhance visualization tools.