Most organizations believe they are prepared for ransomware, but they probably aren’t. Sure, everything seems to be in place: backups and a plan for disaster recovery, plus recovery time objective (RTO) and recovery point objective (RPO) tracking.
But when a real attack happens, many fail to recover within acceptable timeframes, if at all. Not because backups are missing but because they’re not reliable or can’t be retrieved quickly enough.
Therein lies the gap between backup and true cyber resilience. Backup isn’t worth much without fast and reliable recovery.
What actually happens when ransomware hits and recovery begins
A realistic ransomware incident rarely looks like a sudden outage. It unfolds over time.
Day 0 – Initial compromise
Cybercriminals steal credentials through phishing or exposed services.
Day 3 – Lateral movement
Attackers move across endpoints and servers using legitimate tools.
Day 7 – Privilege escalation
Cyberattackers achieve domain admin access. Backup systems become visible.
Day 10 – Backup targeting begins
Attackers:
- Disable backup agents.
- Modify retention policies.
- Delete or corrupt archives.
Day 14 – Encryption is triggered
Production systems are encrypted across the environment.
Recovery attempt begins
This is where expectations diverge from reality.
- Backups exist but are incomplete.
- Recent restore points are missing.
- Backup repositories are partially encrypted.
The organization now faces a much more complex problem than system recovery. IT professionals must determine whether recovery is even possible. That is the point where many ransomware recovery plans fail.
Why backup systems fail or get encrypted during ransomware
Ransomware operators target backups, which are often:
- Connected to the same network as production systems.
- Managed with the same credentials.
- Accessible through domain-level privileges.
All of that makes backups vulnerable. Failure comes with a high cost, but it’s all too common. Common failure patterns include:
- Backup repositories encrypted alongside production workloads.
- Archives deleted before the attack is launched.
- Backup jobs silently failing after agents are disabled.
That’s why many organizations experience backup failure during ransomware incidents, even when their backup strategy appears sound. Protecting backups from ransomware requires isolation, immutability and controlled access — not just storage.
Can ransomware spread to backup systems? Yes, here’s how it happens
Yes, ransomware can spread to backup systems, and it often does. Once attackers gain domain control, they treat backup infrastructure as a priority target. As part of the process, attackers generally:
- Discover backup servers and storage locations.
- Access backup management consoles.
- Escalate privileges within backup systems.
- Disable, delete or encrypt recovery data.
Backup infrastructure is especially exposed because it needs broad access across systems. Without visibility across endpoints, servers and backup layers, organizations cannot track how ransomware spreads or where it’s staging. It’s for that reason that siloed security and backup tools struggle and often fail during active attacks.
Why disaster recovery plans fail during ransomware attacks
Most disaster recovery plans are designed for outages, not adversaries. They assume:
- Systems are clean.
- Identity services are intact.
- Recovery environments are trustworthy.
Ransomware breaks these assumptions. Failure points include:
- Compromised Active Directory preventing authentication.
- Network dependencies blocking recovery workflows.
- Recovery procedures that were never tested under attack conditions.
Even when backups exist, disaster recovery after a cyberattack becomes unpredictable. Backup vs. disaster recovery, then, is not just a technical distinction. Backup stores data. Disaster recovery must restore operations under pressure. Backup without recovery simply isn’t enough.
Why RTO and RPO are not met in ransomware recovery
RTO and RPO are rarely achieved during real ransomware incidents. There are a few primary reasons why.
RPO challenges
- Attack dwell time means backups may already contain compromised data.
- Detection delays increase data loss beyond expected thresholds.
RTO challenges
- Recovery slows due to uncertainty about clean restore points.
- Manual processes replace automated workflows.
- Systems require validation before being brought online.
The results are missed objectives and extended downtime. Understanding RTO and RPO ransomware impact requires acknowledging that attackers actively degrade recovery conditions.
How to recover from ransomware when backups are compromised
When both production systems and backups are affected, recovery becomes a constrained process. Key requirements include:
- Immutable backups that cannot be altered or deleted.
- Off-site or cloud-based copies isolated from the attack.
- Identification of clean validated backups for faster recovery to production.
- Prioritization of critical systems for staged recovery.
- Coordination between incident response and IT operations.
This is where disaster recovery ransomware scenarios become most challenging. Organizations without isolated recovery options often cannot restore business operations quickly, if at all.
What a ransomware recovery plan should look like today
A modern ransomware recovery plan must assume compromise. Core principles include:
- Protect backups from ransomware through immutability and isolation.
- Ensure visibility across endpoints, servers and backup systems.
- Automate recovery workflows to reduce delays.
- Regularly test disaster recovery under simulated attack conditions.
That is the foundation of cyber resilience. A ransomware backup strategy has to ensure survivability, not just retention.
How to protect backups from ransomware attacks
Protecting backups requires architectural changes, not incremental fixes. Effective approaches include:
- Isolated backup storage that is not reachable from production environments.
- Strong access controls and credential separation.
- Immutable storage preventing modification or deletion.
- Anti-malware scanning and validation of backups.
- Monitoring of backup systems as part of the security posture.
Organizations that fail to protect backups often discover too late that recovery is not viable.
Rethinking business continuity after ransomware
Business continuity during ransomware depends on integration. Security, backup and disaster recovery must work together during an attack, not as separate tools. After having come to that realization, many organizations are shifting toward unified approaches that combine:
- Protection and detection.
- Backup and recovery.
- Disaster recovery orchestration.
- Cloud-based fallback infrastructure.
Natively integrated solutions, including Acronis Cyber Platform, reflect the shift by integrating security, backup and disaster recovery into a single system with a central point of control. Designed for ransomware recovery and business continuity, an integrated platform should also offer cybersecurity, data protection and infrastructure management to deliver complete functionality.
The goal is not just to store data but to ensure that recovery is possible under real attack conditions. Because when ransomware hits, just having backups isn’t what counts. What matters is that you can actually recover from an attack — quickly, and with reliable data.
About the Author: Subramani Rao is Senior Manager, Cybersecurity Solutions Strategy at Acronis, where he focuses on solution strategy, positioning, and go-to-market initiatives across operational technology, business continuity, and cyber protection. He has more than 15 years of cybersecurity experience across security strategy, risk, compliance, cloud, and resilience, and has helped organizations align security outcomes with broader business priorities. He holds an Executive MBA from London Business School, an MSc in Computer Security, and is CISSP certified.
Subramani Rao — Cybersecurity Solutions Strategy at Acronis
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