ISTQB Agile Tester Complete Practice Test 2025

The correct answer, which identifies attributes of software products that prevent unauthorized access, is security. Security encompasses various measures and protocols designed to protect data from unauthorized access and breaches. It includes aspects such as authentication, authorization, encryption, and secure coding practices that collectively aim to safeguard software systems and the information they process.

By focusing on security, organizations ensure that only authorized users have access to sensitive information, thereby reducing the risk of data theft, corruption, or loss. This understanding is fundamental in software development, particularly in Agile environments, where collaborative practices are needed to maintain the integrity of the software while also addressing security concerns.

Other options, while relevant in different contexts, do not directly refer to the prevention of unauthorized access. Integrity refers to the assurance that the information is accurate and trustworthy. Scalability deals with a system's capacity to grow and manage increased loads effectively. Availability focuses on ensuring that systems and services are accessible when needed. Each of these attributes plays a vital role in the overall quality and performance of software, but they do not specifically address the core principle of preventing unauthorized access like security does.