Which of the following is an example of a software security control?

Firewalls are a fundamental example of software security controls because they actively monitor and regulate incoming and outgoing network traffic based on predetermined security rules. By establishing a barrier between a trusted internal network and untrusted external networks, firewalls serve to prevent unauthorized access and protect sensitive data from cyber threats. They can also log and report activity, providing valuable insights into potential security incidents.

In contrast, physical locks and surveillance cameras are examples of physical security controls designed to protect tangible assets and ensure the safety of premises. Backup drives pertain to data storage and recovery solutions and are more aligned with data management rather than directly addressing security threats. Thus, firewalls uniquely qualify as software security controls, which is why they are the correct choice.