FinFusion, a leading finance firm, discovered a slow leak of financial data over several months.

This scenario involves a high-privilege insider threat, one of the most difficult risks to detect. ECIH emphasizes that senior executives often have broad access, making role-based restrictions impractical.

Option A is correct because advanced employee monitoring and behavioral analytics can detect abnormal access patterns, data exfiltration trends, and deviations from established baselines—even for executives. These tools operate within legal and policy frameworks while providing actionable alerts.

Options B and C reduce efficiency and are easily bypassed. Option D is intrusive and ineffective for digital exfiltration.

ECIH identifies behavioral monitoring as the most effective control for detecting malicious insiders with legitimate access, making Option A correct.