212-89 Exam Dumps : EC Council Certified Incident Handler (ECIH v3)

ECIH emphasizes that advanced persistent threats require intelligence beyond static indicators. While IOCs are useful, they often change quickly and provide limited context.

Option B is correct because collaboration with industry peers enables sharing of tactics, techniques, and procedures (TTPs), which are more stable and actionable than IOCs. ECIH strongly promotes information sharing communities, ISACs, and trusted peer collaboration to improve situational awareness against APTs.

Options A, C, and D provide partial or outdated insights and lack operational depth.

Therefore, peer collaboration focused on attacker behavior is the most effective approach.

If a hacker influences an employee or a disgruntled staff member to gain access to an organization's resources or sensitive information, this is classified as an insider attack. Insider attacks are perpetrated by individuals within the organization, such as employees, contractors, or business associates, who have inside information concerning the organization's security practices, data, and computer systems. The threat from insiders can be intentional, as in the case of a disgruntled employee seeking to harm the organization, or unintentional, where an employee is manipulated or coerced by external parties without realizing the implications of their actions. Phishing attacks, footprinting, and identity theft represent different types of cybersecurity threats where the attacker's method or objective differs from that of insider attacks.

This incident indicates credential compromise, a common cloud security issue addressed in the ECIH Cloud Incident Handling module. When credentials are suspected to be compromised, the immediate priority is to stop unauthorized access and determine the scope of misuse.

Option B is correct because resetting the compromised credentials immediately cuts off the attacker’s access. Reviewing recent access logs allows responders to validate what actions were taken, which data was accessed, and whether additional accounts were affected. ECIH emphasizes immediate credential revocation as a first-response action in identity-based cloud incidents.

Option D (enabling MFA) is a critical hardening measure but does not immediately revoke compromised credentials. Option A is a recovery step that may not stop ongoing access. Option C may be necessary later but should not delay immediate containment.

Therefore, resetting credentials and reviewing logs is the most effective first action, fully aligned with ECIH guidance.