The widespread use of open-source software in today’s applications offers substantial advantages but also introduces critical security challenges. Tools like Snyk and OWASP Dependency-Check play a pivotal role in identifying and addressing vulnerabilities within open-source dependencies. This talk explores how these tools enhance application security by automating the detection of known vulnerabilities, outdated packages, and security gaps in the software supply chain. By incorporating Snyk and OWASP Dependency-Check into development workflows, organizations can proactively address risks, strengthen software security, and meet compliance requirements. This session provides an in-depth look at these tool's features, limitations, and best practices, highlighting their value for developers and security professionals working to secure application environments.