Commvault Threat Scan: Why Clean Recovery Depends on Clean Backups

For years, cyber recovery was treated as a simple restore exercise. Recover the latest backup, bring systems back online, and move on.

That no longer works.

Modern ransomware attacks are designed to stay hidden. Threat actors often compromise environments weeks - sometimes months - before encryption or disruption begins. By the time an organisation realises there’s a problem, malicious code may already be embedded across production systems and backup data.

That creates a dangerous recovery challenge: if you restore infected backups, you risk putting malware straight back into production and restarting the attack all over again.

This is exactly the problem Commvault Threat Scan is built to address.

Rather than focusing solely on prevention at the perimeter, Threat Scan helps organisations validate the integrity of their backup data — continuously analysing backups for malware, ransomware indicators, suspicious behaviour, and anomalous file activity so recovery teams can restore with confidence to a known clean state.

Because in a cyber recovery scenario, recovering fast isn’t enough. You need to recover clean.

A Potential Problem during Cyber Recovery: Reinfection

One challenge during ransomware recovery is reinfection.

Traditional backup platforms are excellent at restoring data quickly, but speed alone doesn’t guarantee the recovered environment is safe. If compromised files are restored back into production, the recovery effort can fail before it’s even complete.

Threat Scan helps reduce that risk by:

• Scanning backup content for malware and ransomware indicators
• Automatically quarantining suspicious or infected data
• Identifying the last known clean recovery point
• Preventing compromised files from being restored

The result is a recovery process built around validation, not assumption.

Reducing Uncertainty During Recovery

Uncertainty thrives during a cyber incident is uncertainty. Recovery teams are often trying to answer critical questions under pressure:

• Which backups are actually safe?
• When did the compromise begin?
• Which systems can be trusted?
• How far back do we need to recover?

Without clear answers, recovery slows down dramatically.

Threat Scan helps reduce that uncertainty through:

• Continuous backup analysis
• Automated quarantine workflows
• Clean recovery recommendations
• Synthetic clean recovery processes
• AI-assisted recovery orchestration

This shifts recovery from a reactive restore operation to a more intelligent, validated recovery process.

Faster Incident Response and Better Resilience

Cyber incidents are rarely isolated to infrastructure teams anymore. Security operations, incident response, compliance, and leadership teams all need visibility during an event.

Threat Scan integrates with SIEM and SOAR platforms, helping security teams enrich investigations and automate response workflows.

When combined with Commvault Cleanroom Recovery and recovery orchestration capabilities, organisations can:

• Reduce downtime
• Improve recovery confidence
• Validate workloads before reintroduction
• Strengthen overall cyber resilience

This is increasingly important as organisations move toward formal cyber recovery testing and resilience validation programmes.

Key Features of Commvault Threat Scan

AI-Enabled Threat Detection

Threat Scan combines multiple detection techniques to improve accuracy while reducing false positives, including:

• Signature-based malware scanning
• AI/ML threat prediction
• Ransomware encryption detection
• Entropy analysis
• IOC matching with HASH and YARA rules

The layered detection model is designed to identify both known and emerging threats across backup data.

Smart Quarantine

When suspicious content is detected, Threat Scan automatically isolates compromised data from clean recovery workflows.

This helps prevent organisations from accidentally restoring infected files back into production environments.

Last Known Good Recovery

One of Threat Scan’s most valuable capabilities is its ability to identify clean recovery points by analysing historical backup snapshots and detecting suspicious changes over time.

In ransomware incidents where attackers may have been present for weeks, this becomes critical.

Threat Hunting Across Backup Data

Threat Scan supports:

• Scheduled scans
• On-demand scans
• Post-restore scans
• Exception-based scans

This enables organisations to proactively investigate backup environments rather than waiting for recovery to expose hidden threats.


Designed for Hybrid and Multi-Platform Environments, with Protection Beyond Virtual Machines

One of the key architectural strengths of Commvault Threat Scan is its hypervisor-agnostic design.

Many security and recovery platforms rely heavily on hypervisor-native integrations, which can create operational limitations in mixed environments.

Threat Scan uses a hypervisor-less scanning architecture that supports:

• VMware
• Nutanix AHV
• Microsoft Azure
• Amazon EC2
• VMware Cloud Director

That flexibility matters because most enterprises no longer operate a single platform. Recovery and security tooling need to work consistently across hybrid infrastructure.

And we all know, ransomware increasingly targets unstructured data and cloud-native storage, not just virtual machines.

Threat Scan extends protection across a wide range of workloads, including:

• Physical servers
• NAS systems
• File systems
• Object storage
• Cloud file shares
• Hybrid cloud environments

Supported cloud file services include:

• Amazon EFS
• Amazon FSx for NetApp ONTAP
• Amazon FSx for Windows
• Azure Files
• Azure NetApp Files

This broad workload coverage helps organisations apply consistent cyber recovery controls across modern environments.

Frequently Asked Questions

How does Threat Scan prevent infected files from being restored?

Threat Scan automatically quarantines suspicious or compromised files identified during backup analysis. During recovery operations, quarantined files are excluded so only validated clean data is restored.

Are suspicious files retained for investigation?

Yes. Threat Scan isolates and retains suspicious or compromised files for forensic analysis while allowing clean recovery workflows to continue separately.

Why is Threat Scan more effective than traditional signature-based detection?

Traditional signature-based tools rely on known malware patterns, which makes detecting unknown or evolving threats difficult.

Threat Scan improves detection accuracy by combining:

• Signature-based detection
• AI and machine learning
• Behavioural analytics
• Entropy analysis
• Threat intelligence indicators
• File comparison analysis

This layered approach improves visibility into unknown and polymorphic threats while helping reduce false positives.

Final Thoughts

Cyber recovery is ever evolving.

The challenge is no longer just recovering data quickly - it’s recovering safely, confidently, and without reintroducing compromise into the environment.

Commvault Threat Scan helps organisations move beyond traditional backup recovery by continuously validating backup integrity, identifying hidden threats, and supporting clean recovery workflows across hybrid environments.

Your backups are only valuable if you can trust them. Ensure they are.

Whether you're looking to upgrade your existing data protection system or deploy new technology to help protect your organisation against the latest cyber threats, COOLSPIRiT has the expertise and solutions you need to keep your organisation's data safe and secure.

Our GUARDiAN range of products, powered by Commvault, make the perfect choice for protecting the lifeblood of your business. Learn more here.

To find out more, contact our expert team today at hello@coolspirit.co.uk or call 01246 454222.