Leonidas is a framework designed for executing attacker actions in cloud environments. The tool provides a YAML-based format for defining cloud attacker tactics, techniques, and procedures (TTPs) along with their associated detection properties. The framework can compile these definitions into multiple outputs including a web API that exposes each test case as an individual endpoint, Sigma rules for detection purposes, and documentation. The API deployment utilizes an AWS-native CI/CD pipeline and requires API key authentication for access. The tool includes a local generator component that can be installed to create Sigma rules and documentation from the defined test cases. This allows security teams to both simulate cloud-based attacks and develop corresponding detection capabilities.
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