What are attributes of software products that prevent unauthorized access called?

The attributes of software products that prevent unauthorized access are referred to as security. Security in software development encompasses various measures and practices designed to protect systems from threats and vulnerabilities. This includes the mechanisms that ensure confidentiality, integrity, and availability of information and services, effectively preventing unauthorized access or breaches.

In a software context, security measures can involve encryption, authentication processes, and access controls that restrict who can view or manipulate data. This aspect is critical in maintaining the trust of users and ensuring the data is protected from unauthorized use.

While the other options reference important qualities of software products, they do not specifically address the prevention of unauthorized access. Integrity focuses on ensuring that data remains accurate and unaltered, scalability deals with the capacity of a system to handle growth, and availability relates to the system's uptime and readiness for use. These aspects are essential for overall software reliability and performance, but they do not directly pertain to the protective measures against unauthorized access like security does.