APIs expose data and functionality through interfaces that must be designed and implemented with care. Developers and technical teams examine risks involving authorization, authentication, data exposure, resource limits, mass assignment, configuration, injection, asset management, and logging. Attack examples, code walkthroughs, and mitigation guidance connect these issues to practical API design, implementation, and review decisions.

• Broken Object Level Authorization
• Broken User Authentication
• Excessive Data Exposure
• Lack of Resources & Rate Limiting
• Broken Function-Level Authorization
• Mass Assignment
• Security Misconfiguration
• Injection
• Improper Asset Management
• Insufficient Logging & Monitoring