RansomLeak is a security awareness and secure-coding training platform based in the EU. It delivers short, scenario-based exercises in a simulated office: employees work through phishing, vishing, smishing, deepfake, ransomware, MFA-fatigue, and workplace-security situations, while developers exploit and then fix OWASP Web, API, LLM, and Agentic Top 10 risks, cloud misconfigurations, and Git secrets. Every exercise is free for individual learners in the browser with no registration, and is available in multiple locales. Organisations can add assignment, reporting, SCORM and LTI delivery, and integrations with HR, compliance, and security tooling. RansomLeak was founded in 2025 by the team behind Kontra Application Security Training.