What is a recommended practice for maintaining software security?

Regularly updating antivirus software is a crucial practice for maintaining software security because it helps to protect systems against the latest threats, including new viruses, malware, and other security vulnerabilities. Cyber threats are continuously evolving, and new malware can emerge regularly. By keeping antivirus software up to date, organizations can ensure that they have the latest virus definitions and security patches, which are essential for identifying and neutralizing potential threats before they can do significant damage.

In today’s threat landscape, relying on outdated antivirus software can lead to increased vulnerability. This makes it critical for organizations to follow a proactive approach by regularly checking for updates and applying them in a timely manner to bolster their security posture.

The other options do not directly address the ongoing need for protection against new and emerging threats in software. Restricting all physical access, while important for overall security, does not directly impact software vulnerabilities. Implementing multi-factor authentication significantly enhances user authentication but does not directly protect against malware. Using outdated software to reduce complexity, on the contrary, exposes systems to numerous vulnerabilities that can be exploited by attackers. Therefore, regularly updating antivirus software stands out as a key practice supporting continuous software security.