Once they made sure that the attackers do not have access in their system, the security administrators decided to proceed with the forensic analysis…

A detective control is designed to discover and identify the occurrence of an unwanted event. In the provided scenario, the act of conducting a forensic analysis is a quintessential detective measure. Its purpose is to investigate the system post-breach to find evidence, understand the attack vector, and determine the extent of the compromise. This investigative process directly aligns with the function of detecting the specifics of a security incident that has already occurred. The analysis concluded that the existing system lacked threat detection capabilities, reinforcing that the forensic analysis itself was the detective action taken.

A. Texas H&H Inc. integrated the incident management policy in Its information security policy This is a directive control, as it provides guidance and mandates for employee actions, rather than detecting an active or past incident.
B. Texas H&H Inc. tested its system for malicious activity and checked cloud based email settings This action is not explicitly stated in the scenario. The text specifies a forensic analysis was conducted, which is a more specific post-incident investigation.

1. PECB. (2022). ISO/IEC 27001 Lead Implementer Training Course Material. In the modules covering risk treatment and control implementation, detective controls are defined as measures that detect and report when an attack has occurred or is in progress. Forensic analysis is a primary example of a post-incident detective activity used to understand the nature of a breach.

2. ISO/IEC 27002:2022, Information security, cybersecurity and privacy protection — Guidance on information security controls. Section 8.16 Monitoring activities. This control's purpose is "to detect anomalous behaviour and potential information security incidents." Forensic analysis is an advanced form of monitoring and investigation performed after a potential incident is identified, making it a detective action.

3. Tipton, H. F., & Krause, M. (Eds.). (2007). Information Security Management Handbook (6th ed.). Auerbach Publications. Chapter 11, "Information Security Governance." This academic handbook categorizes controls into preventive, detective, and corrective types. It defines detective controls as those that "identify a potential threat," including activities like intrusion detection systems, security audits, and post-incident forensic investigations. (DOI not applicable for the entire handbook, but it is a standard academic reference).