S10 Group Article series · The operational attack realities

The Backup Existed.
Recovery Was Still a Question.

A backup becomes a recovery path only when you can prove
what it contains where it can be restored and what is safe to reconnect
Article #16
Published: 09 October 2026
By Stan van Gemert | S10 Group
By Stan van Gemert
When attacks move series

Executive summary

The previous publication, "Backups Restore Systems. Not Trust.", established the recovery standard: a readable backup and a running workload do not prove that identities, configurations, administrative routes and dependencies are safe to reconnect. Recovery requires separate evidence and a staged operating decision.

"The Backup Existed. Recovery Was Still a Question." places that standard inside a live ransomware incident. Your teams may know that copies exist while still having to determine how far back to go, whether the destination environment is clean, which dependencies can return and who may accept the risk of reconnection before every fact is settled.

The next special publication, "The Missing Budget Line Between Prevention and Recovery", turns the recovery dilemma into a budget decision. It asks whether your organisation has funded a practical way to contain an active incident while its scope and the recovery burden that follows can still be reduced.
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The next scheduled publication, "When Prepared Does Not Mean Ready", widens the question beyond recovery. Plans, controls, contracts and exercises create options, but readiness only becomes visible when a credible signal can produce an authorised, bounded action while essential operations continue.

The reassuring sentence was true but incomplete

The first sentence calmed the room: "We have backups." For a few seconds, those words sounded like control. The board heard a way back, operations heard a possible restart, finance heard a limit on the damage and legal heard a route away from the worst scenario.

The second sentence returned the uncertainty: "We do not yet know whether we can rely on them." A ransomware incident turns the recovery path into part of the investigation. The relevant question is no longer whether a copy exists, but whether your teams can show what it contains, where it can be restored and what is safe to reconnect.

BACKUP IS NOT RECOVERY
A backup proves that a copy exists.
Recovery proves that a service can return safely enough for the business to depend on it again

The insurance-policy assumption

Most teams understand backups as protection, and that assumption is reasonable. If production systems are encrypted, restore them. If a database is damaged, roll it back. If a live environment fails, rebuild from a safer copy.

The logic works in a clean disaster such as a failed disk, corrupted file, regional outage or human mistake caught quickly enough. In those situations, the past is usually safer than the present. Ransomware changes the status of the past.

If an attacker was present before the visible crisis, a restore point is not automatically known-good. It may carry unresolved configuration, credentials or attacker-created changes, while even clean data may have no clean and compatible destination.

Your organisation therefore faces two separate questions: can the data be restored, and what will receive it? The statement "we have backups" answers a storage question. It does not yet answer whether your business can resume safely.

The poisoned timeline

The hardest recovery decision is often temporal: how far back should you go? Restoring from yesterday may preserve an attacker's route. Restoring from last week may reproduce the same weakness. Restoring from last month may remove critical transactions, records, orders or operational changes. A sufficiently old restore point may protect the technology while leaving the business unable to operate accurately.

Your incident team rarely has perfect knowledge when the choice must be made. It may know when encryption became visible without knowing when access began, what changed, which credentials were used, whether backup repositories were reached or whether recovery tooling was altered.

Choosing a restore point is therefore a judgement about evidence, operations, legal exposure and future safety. Speed matters, but an unverified return can create a second incident.

TIME BECOMES EVIDENCE
A recovery date is a claim about when the environment was safe enough to become operational again

When data survives but the way back does not

The British Library's review of its 2023 cyberattack separates data survival from service recovery. Secure copies of important digital collections and metadata existed, yet the damaged server estate and absence of viable infrastructure prevented those copies from returning services in the expected way. Some legacy applications also could not return in their previous form.The case does not make backups less valuable. It shows why serious recovery can become reconstruction even when data survives.

Two ways recovery confidence can fail

The British Library reported that attackers encrypted or destroyed substantial parts of its server estate. Secure copies of digital collections and metadata existed, but the damaged infrastructure and legacy dependencies meant that preserved data did not translate directly into restored services.

The December 2021 ransomware incident affecting UKG's Kronos Private Cloud exposed a different dependency. UKG reported that affected customers regained safe access to core time, scheduling and HR or payroll capabilities by 22 January 2022. Hospitals and other customers did not control the affected cloud platform, yet they still had to absorb the operational consequences while the provider restored it.

NCSC guidance links both cases to recovery discipline: know how to restore, test the process, keep copies separate, connect them only to known-clean devices and scan them before restoration. It warns that ransomware may have been present long enough to replicate into backups.

Sophos's 2025 enterprise survey reported that 53 per cent of surveyed enterprise organisations whose data had been encrypted used backups to recover it, down from 73 per cent in the previous year's enterprise survey. The result describes that respondent set; it is not a universal recovery rate or evidence that every other backup was unusable.

Together, the sources support a narrow conclusion: backup existence is valuable, but operational recovery still has to be demonstrated.

Sources:

British Library - Learning lessons from the cyber-attack
https://www.bl.uk/home/british-library-cyber-incident-review-8-march-2024.pdf/

UKG - FY25 UKG Global Impact Report
https://www.ukg.com/sites/default/files/2024-06/2021-UKG-ESG-Report.pdf

National Cyber Security Centre - Mitigating malware and ransomware attacks
https://www.ncsc.gov.uk/guidance/mitigating-malware-and-ransomware-attacks

Sophos - The State of Ransomware in Enterprise 2025:
https://www.sophos.com/de-de/blog/the-state-of-ransomware-in-enterprise-2025
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The business needs more than files

A backup may contain files, but the business needs working services. Recovery also depends on identity, applications, databases, certificates, keys, network routes, middleware, access rules, endpoints, suppliers and people who understand what must return first. The sequence must prevent unverified components from reconnecting faster than your teams can validate them.

Owning the contents of a warehouse does not help if the loading docks, keys, forklifts, roads, inventory system and staff rosters are unavailable or unsafe.

The board may hear "we have backups" and expect a known route while the recovery team sees a chain of unresolved dependencies. Which copies were isolated? Which were tested? Which systems can return without relying on compromised identity? Which service must resume first to keep the business viable?

Recovery confidence rests on whether your minimum safe operating capability can be rebuilt and supported with enough evidence to run.

RECOVERY IS A BUSINESS CAPABILITY
Your organisation recovers when the minimum safe operating capability can run with evidence strong enough to support the decision

What uncertainty removes

Backup uncertainty consumes time because each restore decision creates a verification burden. Work that appears to be technical delay may be the work that prevents recontamination.

It also removes simplicity. The response is no longer an encrypted system followed by a restore. Your teams must establish identity, validate data, prioritise critical processes, rebuild infrastructure, reconnect dependencies and demonstrate enough integrity to resume operations.

Authority becomes harder as well. The CIO may need speed, the CISO may require more validation, operations may need partial service, legal advisers may need evidence preserved and finance will see downtime accumulating. An accountable executive may have to approve the next step before anyone can prove that the entire environment is clean.

The executive dilemma is how to move when the route back is not yet sufficiently understood.

‍If you cannot yet prove when the environment was clean who decides which restore point is safe enough for the next business service

Earlier containment reduces the recovery problem

Backups remain essential, but they should not carry the full burden of an incident that was allowed to spread. Our platform acts earlier by reducing the number of systems, identities and dependencies that recovery must later treat as uncertain.

If malicious behaviour moves freely before encryption, more systems need investigation, more restore points become questionable and more dependencies require validation. If containment interrupts movement earlier, your organisation still faces recovery, but the boundary is smaller and easier to govern.

Our available platform capabilities can interrupt malicious behaviour, lateral movement, data-theft paths and ransomware encryption while your teams are still working with incomplete facts. Earlier interruption does not validate a backup or certify a restored environment. It reduces the volume of uncertainty that recovery has to absorb.

PRESSURE TEST THE ENCRYPTION SCENARIO
Compare the same controlled file-encryption scenario with your existing security controls active first without Ransomware Containment and then with it

Our focused Ransomware Resilience Assessment is limited to encryption. It does not test identity compromise, lateral movement, data exfiltration, Server Intrusion Protection, Virtual Server Protection or production downtime. We explain those broader platform capabilities separately.

The way back should not be a guess

The reassuring sentence will always matter: "We have backups." A stronger statement explains what can be restored, where it can be restored, who may reconnect it, which dependencies it needs and what your teams will contain if malicious activity is still moving.

A next incident may not ask whether the backup exists. It may ask whether your organisation can defend the route back while people are tired, facts are incomplete and the business is waiting for services to return.

The backup existed. Recovery was still a question. Your advantage comes from answering it before the restore meeting begins.

The next horizon

Due to a special edition release, we will publish two highly relevant briefings on Monday.

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We begin with a recovery plan inherits the scope an incident has already created. "The Missing Budget Line Between Prevention and Recovery" asks whether your cyber budget funds a way to reduce that scope while malicious activity is still continuing, and why containment deserves a defined place alongside prevention and recovery, followed by "When Prepared Does Not Mean Ready". This article widens the lens from recovery uncertainty to operational readiness. It asks whether your plans, controls, contracts and exercises can produce one authorised, bounded move when a credible signal arrives and the executive who normally approves disruption may not be available.

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FOCUSED RANSOMWARE RESILIENCE ASSESSMENT

Compare controlled file-encryption scenarios with your existing security controls active, first without Ransomware Containment and then with it. The assessment itself is limited to encryption, but alongside the assessment results, we can explain how our platform and its additional Server Intrusion Protection and Virtual Server Protection features, helps detect and interrupt lateral movement, reduce the risk of data theft, protect remote server access and defend virtual environments such as VMware and Hyper-V. That makes the session useful not only as a ransomware-containment test, but also as a practical discussion about what your organisation can still control when identity, privilege and infrastructure trust come under pressure.‍
Bright conceptual visual of frosted-glass blocks where the first block is stopped by a titanium pillar, representing ransomware containment before wider operational disruption spreads.

Coming soon

Wednesday 14 October, Leadership-series #7: "The Goal Is Not Perfect Prevention."

Friday 16 October, Operational Attack-series #7: "The Foundation Failed While the Building Still Stood."

Further readings