APIs have become a cornerstone of modern software development, facilitating communication across various platforms but simultaneously escalating security concerns due to their widespread use and inherent vulnerabilities. As APIs are integral to numerous applications, from social media to financial services, they present an expanded attack surface for cybercriminals, with challenges like injection attacks and business logic vulnerabilities posing significant threats. Identifying these threats is difficult, especially as APIs evolve, and requires sophisticated testing and understanding of specific business processes. The rapid proliferation of APIs, compounded by the complexities introduced by technologies like IoT and large language models, demands stringent security measures such as the implementation of the Zero Trust model and integration of security early in the development lifecycle. Organizations must maintain a comprehensive inventory of APIs and ensure compliance with regulations like GDPR and CCPA to mitigate risks of data breaches, financial losses, and reputational damage. As APIs evolve, staying updated with emerging security practices and technologies is crucial for protecting business operations.