Security Guide: Malicious Insider Threat

 Disclaimer: This guidance is a high-level overview. Insider threats require careful investigation—click the big red button or call us for professional support.

A malicious insider uses legitimate access to harm the company—stealing data or sabotaging systems. Prompt detection and containment minimize the impact and protect sensitive information.


Immediate Steps:

  • Revoke Suspicious Credentials: Immediately disable the user’s accounts and system access.

  • Secure Critical Data: Change passwords and apply MFA on high-value systems or databases.

  • Log & Monitor: Collect system logs, email records, and file access histories for forensic evidence.

  • Interview and Investigate: Consult legal counsel; gather internal statements if needed.

  • Alert Stakeholders: Management, HR, and possibly law enforcement if it involves criminal activity.

  • Conduct Access Review: Evaluate who has privileged access and tighten permissions.

Tackling insider threats requires both technical measures and human resources coordination. A swift lockdown of accounts and thorough investigation helps prevent recurring sabotage or data theft.

Facing an insider threat? Click the big red button for help or call us now to speak with a specialist

© 2025 Cyber Emergency Network. All Rights Reserved.

Service Provider?

We are always looking for top-tier cybersecurity service providers