how to reword: The System and Information Integrity (SI) control family ensures that systems are regularly updated, monitored, and protected against threats. These controls require organizations to identify vulnerabilities, apply patches promptly, act on external advisories, and continuously monitor systems for malicious or abnormal activity. The Equifax breachcaused by an unpatched vulnerability in Apache Struts, poor system monitoring, and failure to act on security alertsillustrates a systemic breakdown in these fundamental areas. If Equifax had implemented SI controls effectively, the exploited vulnerability could have been patched in time, the breach could have been detected earlier through monitoring, and action could have been taken in response to security advisories. These practices are directly supported by specific SI controls in the NIST framework