API Security Testing: How To Protect The Backbone Of Mobile Applications
- Bugsmirror Research Private Limited

- Jan 23
- 2 min read
APIs are the backbone of modern mobile applications. They are responsible for data exchange, handling authentication, and integration with third-party services. As they are connected to different servers, they are the most attacked components of any application. API security testing helps organisations identify and fix weaknesses before attackers exploit them.

Why is API security testing important?
API security testing involves analysing APIs to uncover weaknesses, configuration issues, and security gaps, ensuring they can withstand attacks and meet required security controls. Mobile apps rely heavily on APIs for almost every function, from login to payments and data fetching. With insecure APIs, attackers can target backend logics without completely breaking the app itself.
What API security testing provides:
API security testing is not just about securing endpoints, but about identifying weaknesses and their impact on the security of the application and its data. The process includes checking the behaviour of APIs to cyber attacks and checking whether the attacks are affecting the business logic, data leakage, and bypassing access controls.
This process includes the following:
It tests authentication flows and session management (it checks how sessions and tokens are created, expired, or refreshed. It ensures attackers do not hijack sessions, use old tokens or stay logged in after logging out.)
It always verifies authorisation codes across different users and their roles.
It works in identifying insecure data exposure and checking weak points of data leakage.
Validates input handling by sending malicious code to test its response.
Bugsmirror APILock:
Bugsmirror APILock is a complete runtime API security testing tool. It is an automation solution which tests over 25 API threats. It detects API threats for Android and iOS mobile applications that include checking communication channels, authentication flows, and business logic.
Main points of Bugsmirror APILock:
It checks complete API endpoints, including shadow APIs, for a complete security assessment.
It exposes vulnerabilities for sensitive users and data leakage.
Furthermore, it identifies denial-of-service (DoS) attacks.
It checks unauthorised access and controls authentication logics.
At last, it creates a clear report containing all the vulnerabilities present with actionable recommendations.
Start your API security testing with APILock. Contact us now and get a consultation.


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