> Markdown version of [/@sebastian-leuer](https://www.wearedevelopers.com/@sebastian-leuer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sebastian Leuer Security researcher building secure development tools for C# and .NET. ## About Sebastian Leuer researches secure software development at Fraunhofer IEM. He focuses on building tools that help engineers write safer code, specifically for C# and the .NET runtime. His day-to-day work involves high-precision static code analysis and training developers to act as security champions. He frequently breaks down common software traps in .NET development, teaching teams how to navigate cryptography errors and character encoding vulnerabilities. Sebastian studied media informatics at Düsseldorf University of Applied Sciences. ## Past Sessions ### World Congress 2024 · July 17, 2024 Berlin, Germany - [Programming secure C#/.NET Applications: Dos & Don'ts](https://www.wearedevelopers.com/videos/1126-programming-secure-c-net-applications-dos-don-ts) · 30 min · 🎥 Watch recording ## Videos - [Programming secure C#/.NET Applications: Dos & Don'ts](https://www.wearedevelopers.com/videos/1126-programming-secure-c-net-applications-dos-don-ts) · Sebastian Leuer