Application Programming Interfaces (APIs) form the neural network of modern SaaS applications, web platforms, and mobile apps, frequently carrying the organization's most sensitive business data.
Technical depth and operational guidance
Unlike standard web pages, APIs expose raw application logic and direct database queries. Attackers bypass client interfaces completely, crafting malicious JSON and XML requests to extract customer records.
The most critical vulnerability affecting modern APIs is Broken Object Level Authorization (BOLA/IDOR), where an API endpoint fails to verify if the authenticated user has permission to read the requested object ID.
Additionally, missing rate-limiting allow adversaries to launch high-speed brute-force attacks, while mass assignment vulnerabilities allow users to elevate their privileges by submitting unauthorized parameters.
