Open Source Spotlight: DOMPurify with Mario Heiderich

Dr.-Ing. Mario Heiderich is the creator of DOMPurify, an XSS sanitizer for HTML. As a security researcher from Berlin and leader of Cure53 company, he focuses on creating robust, reliable, fast, and secure sanitization libraries like DOMPurify. The project aims to prevent common attacks such as XSS and DOM clobbering by removing risky elements from user-contributed HTML. Mario emphasizes the importance of maintaining a minimal feature set to ensure security and stability in his work. He also highlights the significance of not trusting users, browsers, or anyone else when it comes to development security. Mario's passion for creating better tools and ensuring quality has driven him to maintain a comprehensive test suite and review every commit and PR carefully.