Open Threat Informed Detection Engineering is the European Commission DIGIT.S2 (Security Operations) open source initiative to build a rich ecosystem of tooling and data supporting Cyber Threat Detect...

Introduction: The escalating volume and sophistication of modern cyber threats have pushed traditional, manual detection engineering to its breaking point. In response, the cybersecurity industry is pivoting towards a paradigm known as Detection-as-Code (DaC), which applies software development best practices like version control, automated testing, and continuous integration to security detection logic. This article explores the practical implementation of DaC through frameworks like OpenTIDE, providing security engineers with the commands and code to build an automated defense pipeline.

Introduction: The cybersecurity landscape is shifting from reactive defense to proactive, intelligence-driven detection. The recent open-sourcing of over 200 threat vector objects via the ShareTide project represents a pivotal moment in this evolution, championing interoperability and community-driven defense. This initiative, born from the European Commission CSOC, provides a massive head start for any organization building a modern Detection Engineering program.

Security efficacy has diminishing value, at some point, as rule quantity grows Rule count is not an absolute measure of successful coverage Coverage is not an absolute measure of security Alert count has an inverse relationship with their manageability Threats are not static Security posture is temporal and so only instantaneously representative