How does Elastio detect intermittent encryption?

Modern ransomware encrypts alternating 4KB blocks, so the entropy change stays below the statistical noise floor and file sizes are unchanged — entropy- and anomaly-based tools see nothing unusual and the backup completes flagged clean. Elastio’s Deep File Inspection validates the internal file structure and produces a deterministic pass or fail per file, per recovery point, regardless of entropy.

Last updated May 27, 2026