What measurable user behaviors were exhibited that contributed to the compromise?
During the lessons-learned phase, it's important to analyze the specific user behaviors that led to the successful spear-phishing attack, even after a robust training program. This could involve understanding patterns such as clicking on suspicious links, failing to verify emails, or not reporting unusual activity. By identifying these behaviors, the organization can target specific areas for improvement in training or behavior modification.
Which technical controls, if implemented, would provide defense when user training fails?
Since users fell victim to the spear-phishing attack despite training, it's critical to implement technical controls that can provide an additional layer of defense. This may include email filtering to block phishing attempts, multi-factor authentication (MFA), endpoint detection and response (EDR) tools, and sandboxing for suspicious attachments. These controls will help prevent or mitigate attacks when training alone is insufficient.