Frans Rosen, a cybersecurity expert, shares groundbreaking insights from his latest presentation. He discusses X-correlation injections and their effects on server-side vulnerabilities, emphasizing the role of request IDs. Frans delves into fuzz testing techniques, revealing how to uncover hidden software weaknesses, and highlights the complexities of managing cross-origin APIs. Additionally, he explores security challenges related to JSON Web Tokens and logging pipelines, providing practical solutions for developers and security professionals.