Short definition: Detecting unauthorized file or configuration changes.
1 min read
What it is
FIM tools monitor critical files and compare them against known-good baselines. Any change prompts an alert, helping detect malware, tampering, or insider threats early.
Why it matters
Unauthorized file changes often precede full compromise-ransomware, rootkits, web shells.
How to reduce risk
- Deploy FIM on servers
- Monitor configuration files
- Protect baseline hashes
- Integrate FIM with SIEM
- Review alerts quickly
- Back up critical configs