How is a countermeasure used?

A countermeasure is a strategic action or tool implemented to mitigate or neutralize a threat or risk. In cybersecurity, for example, countermeasures like firewalls and encryption protect systems from unauthorized access and data breaches. In physical security, measures like surveillance cameras and access controls help deter criminal activity. Ultimately, countermeasures are designed to enhance safety and security by proactively addressing vulnerabilities.