Cybersecurity Consulting Firm – Cyber Castellum
APIs now power virtually every modern application yet are consistently under-tested. Attackers increasingly target API endpoints because they often bypass WAF (Web Application Firewall) and traditional security controls entirely.
API Security Testing evaluates REST, GraphQL, and SOAP APIs for vulnerabilities that commonly bypass traditional perimeter security controls. APIs frequently expose excessive data, lack proper authentication, and contain broken authorization logic making them a prime target for attackers seeking to access sensitive data or backend systems.
We combine automated security tools with hands-on testing to identify vulnerabilities that automated scans may miss. Our security experts manually review API behavior, access controls, authentication, and business logic to verify real security risks and help ensure no exploitable flaw goes unnoticed.
We assess API endpoints, requests, responses, and business logic to identify vulnerabilities that could expose sensitive data or allow unauthorized actions.
We test object-level access controls to identify Broken Object Level Authorization (BOLA) and IDOR vulnerabilities that may allow users to access or modify data they should not be able to reach.
We evaluate authentication and token security, including OAuth, JWT, and API keys, to identify weaknesses that could allow attackers to bypass access controls or gain unauthorized access.
We test APIs for excessive data exposure and mass assignment vulnerabilities that may reveal sensitive information or allow unauthorized changes to application data.
We assess rate limits and resource controls to identify weaknesses that could allow excessive requests, API abuse, denial-of-service conditions, or unnecessary resource consumption.
Our API Security Testing follows the OWASP API Security Top 10 methodology while also considering the specific risks, functionality, and business logic of your API environment.
Book a free consultation to identify weaknesses in authentication, access, and data protection.
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