To improve system security, which should be considered when installing applications?

Choosing to limit installation to trusted and necessary software is a crucial practice for improving system security. This approach minimizes the risk of introducing potential vulnerabilities into the system. When software is installed, it can contain various types of malware or security flaws that can be exploited by attackers. By strictly controlling what software is allowed on a system, organizations can reduce their attack surface and ensure that the applications in use have been vetted for security.

Using only trusted software means relying on reputable sources and vendors with a history of maintaining the security and integrity of their applications. Necessary software means considering the actual functional requirements of the system, avoiding unnecessary tools that could introduce additional risk.

This practice is part of a broader security principle known as the principle of least privilege, which advocates operating any system with the minimal amount of software and privileges necessary to perform its functions. Ultimately, this reduces the opportunities for exploitation and enhances overall system security.