Which practice helps improve overall network security?

Regularly updating software is a crucial practice for enhancing overall network security. This process involves applying patches and updates to both operating systems and applications to address vulnerabilities that cybercriminals might exploit. Software vendors frequently release updates to fix security flaws, improve functionality, and protect against new threats. By keeping systems current, organizations can reduce the attack surface and enhance the security posture of their network.

In contrast, using default passwords can expose systems to unauthorized access, as these passwords are often well-known or easily guessed. Sharing passwords compromises individual accountability and increases the risk of breaches, making it difficult to track unauthorized access. Disabling firewalls removes a critical layer of defense that protects networks from external threats, leaving systems vulnerable to attacks. Thus, regularly updating software stands out as a vital component of effective network security practices.