Improper stress testing and application interfaces primarily contribute to security incidents in web-based applications. Stress testing is a type of performance testing that evaluates how a web-based application behaves under extreme or abnormal conditions, such as high traffic, heavy load, or limited resources. Stress testing can help identify the potential bottlenecks, errors, or failures that may affect the functionality, reliability, or security of the web-based application. Improper stress testing can result in undetected vulnerabilities or weaknesses that can be exploited by attackers. Application interfaces are the points of interaction between a web-based application and other systems, components, or users. Application interfaces can include web services, APIs, user interfaces, or network protocols. Application interfaces can introduce security risks if they are not designed, implemented, or secured properly. For example, application interfaces may expose sensitive data, allow unauthorized access, or enable injection attacks56 References: CISSP All-in-One Exam Guide, Eighth Edition, Chapter 8: Software Development Security, p. 491; Official (ISC)2 CISSP CBK Reference, Fifth Edition, Domain 8: Software Development Security, p. 1009.
