This whitepaper presents an analysis of the OWASP Top 10, a reference standard developed by the Open Web Application Security Project (OWASP) Foundation, which ranks the most critical web application security risks. It outlines the importance of understanding these vulnerabilities as organizations increasingly rely on web applications and APIs. The paper details the updates made to the OWASP Top 10 list in 2021, including the introduction of new categories and changes to existing ones. It emphasizes that addressing these risks requires a holistic approach to application security, integrating consistent security policies across various environments. The document also provides specific examples of vulnerabilities, such as Broken Access Control and Cryptographic Failures, along with recommended prevention strategies. Fastly's solutions are discussed in the context of supporting organizations in mitigating these threats, highlighting the necessity of secure development practices and the use of advanced security tools like Next-Gen WAF.