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Elastio vs. Backup Vendor Detection

Anomaly and entropy monitoring cannot detect modern ransomware. Elastio uses deep file inspection — and produces a deterministic verdict per file, per recovery point.

Two approaches. One fundamental difference.

Backup vendors ask whether your backup looks unusual. Elastio asks whether the file itself is corrupt.

Backup Vendors
"Does this backup look unusual?"
·Entropy detection: flags high data randomness as a potential threat
·Anomaly detection: alerts on deviation in backup size or change rate
·Neither method opens or inspects the file
·Modern ransomware (intermittent, low-entropy) evades both controls
·False positive volume renders alerts operationally unusable
Outcome: Statistical inference. Not evidence.
Elastio
"Does this file show any sign of ransomware?"
·Deep File Inspection: validates internal file structure on every scan
·Detects intermittent and low-entropy encryption that entropy tools miss
·Deterministic result: clean or corrupted, per file, per recovery point
·Fewer than 5 false positives per 10 million files scanned
·Covers live data, replicated data, and backup data
Outcome: Provable recovery. Not assumed.

Why Modern Ransomware Evades Backup Vendor Detection

Built to stay below the noise floor.

The ransomware families that cause incidents today were engineered specifically to evade entropy and anomaly detection.

Intermittent Encryption
Encrypts every other 4 KB block. The overall entropy change stays below the statistical noise floor. Anomaly tools see nothing unusual.
Low-Entropy Encryption
Encryption schemes that mimic the statistical signature of compressed or benign data. Entropy-based detection produces no alert.
Selective Corruption
Attacks file headers or metadata while leaving bulk data statistically normal. The file reads as intact until restore is attempted.

Against these techniques, a statistical guess is not a control. Backup vendors were built for the "big bang" encryption events of earlier ransomware. Today's threat actors have adapted specifically to stay below the thresholds those tools rely on.

Capability comparison

Side-by-side view across detection method, evasion resistance, data coverage, and outcome.

CapabilityBackup VendorsElastio
Entropy-based detection (measures data randomness)
Anomaly detection (monitors behavioral deviation)
Deep File Inspection (validates internal file structure)
Deterministic pass / fail per file
Known malware signatures (YARA / hash matching)
~
Zero-day ransomware detection
Intermittent encryption detection
Low-entropy encryption detection
File header / metadata corruption detection
Detection independent of entropy or statistical noise
Live data (VMs, filers, object stores)
Replicated data (snapshots, replicas)
~
Backup data
~
Last Known Clean recovery point identification
Resilience RPO (R-RPO)
False positive rate: operationally actionable
Provable recovery compliance reporting
Confirmed clean restore point before recovery
Yes~ Partial No

The noise problem your SOC cannot solve

·Compressed database logs register as high-entropy anomalies
·Encrypted video files trigger the same alert as ransomware encryption
·Standard application updates generate behavioral deviation signals
·SOC teams mute or ignore consistently inaccurate alerts

When a tool is consistently inaccurate, the human response is predictable: the alerts are muted, tuned down, or ignored. A last line of defense that your team does not trust is not a defense. The only fix is removing inference from the detection model entirely.

Elastio false positive rate
< 5 per 10,000,000 files
Platform Overview
How the Hunt Engine replaces inference with evidence

The Hunt Engine runs Deep File Inspection across live data, replicated data, and backup data. It produces two outputs: Verified Data and a Provable Recovery point. No statistical guessing. No tuning required.

View Platform

After a breach, three questions get asked

1.How was the recovery point selected?
2.How did you confirm the restore was clean?
3.What caused the downtime to last that long?

Backup vendors answer question one: the data was available. Elastio answers question two: the data was actually clean. Question three depends entirely on whether you had the answer to question two before the incident started.

Proof of concept

Run a detection gap assessment in your environment.

1.
Your current backup vendor detection runs against a data set containing intermittent and low-entropy encrypted files. You see exactly what it catches.
2.
Elastio Hunt Engine runs against the same data. Corruption is confirmed. Last Known Clean recovery point is identified.
3.
Side-by-side output: alert volume, false positive count, confirmed clean recovery point, and R-RPO exposure.

If no gap is found, you retain validated confirmation of your current posture. If corruption is present, you reduce recovery exposure before an adversary tests those assumptions.

PROVE YOUR RECOVERY

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clean point?

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Elastio vs. Backup Vendor Detection | Elastio