Phishing

Establish and maintain the capability to respond to phishing incidents. Ensure email security tools, user reporting mechanisms, and awareness training programs are in place before an incident occurs.

Identify and confirm phishing incidents through user reports, email gateway alerts, and proactive threat hunting. Determine whether reported messages are genuine phishing attempts and assess the initial scope of impact.

Perform in-depth analysis of the phishing campaign including the phishing infrastructure, credential harvesting mechanisms, payload analysis, and attribution. Use findings to inform containment and eradication actions.

Prevent further impact from the phishing attack by quarantining malicious emails, blocking phishing infrastructure, disabling compromised accounts, and implementing email filtering rules to stop the campaign.

Eliminate all remnants of the phishing attack from the environment. Remove any malware delivered via phishing, close the attack vector by strengthening email controls, and report phishing infrastructure to takedown services.

Restore normal operations for affected users, validate that all compromised accounts are secured, confirm email delivery is functioning normally, and monitor for follow-up phishing attempts or secondary attacks.

Conduct a thorough post-incident review of the phishing response. Document lessons learned, update detection rules and security controls, improve user awareness training, and refine the phishing response playbook.