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OSS for Operational Technology

Offline Secure Storage for OT Golden Images, Configs and Recovery Evidence

Plant managers, OT engineers, control-system owners and the CISO all rely on the same small set of files when something stops the line. Offline Secure Storage takes those files off the corporate and OT networks so they cannot be reached, encrypted or weaponised between sessions.

Why OSS

We Think This Is Hard to Ignore

Ransomware attacks against industrial organisations are at record highs, and a single OT incident can cost more than the cyber-insurance market is willing to underwrite. Under NIS2 and the Cyber Assessment Framework, operators are now expected to demonstrate resilient networks and systems with evidence, not assertion. At Firevault, golden images and control-system configurations live on hardware that physically disconnects between sessions, because the only data an attacker cannot weaponise is data they cannot reach.

$5.56M

Average breach cost in industrial sectors, the highest year-on-year rise of any vertical

IBM Cost of a Data Breach 2024

+87%

Year-on-year increase in ransomware attacks against industrial organisations

Dragos ICS/OT Cybersecurity Year in Review 2024

£1.9B

Cost to the UK economy of the JLR ransomware attack, the most expensive cyber attack in UK history

The Guardian, October 2025

5+ days

Average time to restore production after a destructive OT incident

Dragos ICS/OT Cybersecurity Year in Review 2024

Industry Risks

Why OT data is uniquely exposed.

Legacy and Mixed Fleets

OT estates run a long tail of operating systems, embedded devices and one-off integrations that no modern endpoint tool can fully cover.

No Clean Restore Path

When a line stops, recovery depends on whether the last known-good golden image and PLC configuration are still trustworthy and reachable.

Cost of Every Lost Minute

Manufacturing, utilities and critical-infrastructure operators measure incidents in hours of stopped production and millions in lost output.

The Reality

This is already happening to OT estates.

Jaguar Land Rover: £1.9bn Cost to UK Economy

A ransomware attack halted production at all JLR factories and affected over 5,000 supply-chain businesses, the most expensive cyber attack in UK history.

The Guardian, October 2025

Clorox: ~$356M Hit From Production Outage

A 2023 cyber attack disrupted manufacturing and order processing across Clorox plants, with the company reporting around $356 million in damages and lost sales.

Reuters, 2023

Norsk Hydro: LockerGoga Forced Manual Operations

The aluminium producer reverted to manual operations across smelters and extrusion plants after LockerGoga ransomware encrypted IT and OT systems, with losses of about NOK 800 million.

Norsk Hydro, 2019

Colonial Pipeline: Fuel Supply Across the US East Coast Halted

A ransomware attack on the operator of the largest US fuel pipeline forced a six-day shutdown and triggered an emergency declaration across 18 states.

US CISA, 2021

The Scenario

A line stops. The clock starts.

An attack reaches the OT network and HMIs go dark. The control engineer pulls the last validated golden image and the matching PLC configuration from the Firevault Vault. Hashes are checked against the recovery runbook. The site is back inside the recovery time objective, the safety case is intact, and the regulator receives a complete, time-stamped audit trail. The master copies were never reachable to the attacker, so they could never be tampered with.

"When the line stops, the only copy that matters is the one no attacker can reach."

How Firevault Stops This

Disconnect to protect every plant, line and engineering record.

Golden images, PLC and HMI configurations, SCADA project files, engineering drawings and recovery evidence are written to dedicated drives inside a Firevault Bunker. Those drives have no internet connection, no IP address and no API. The Primary End User wakes the Vault using non-IP technology, then authenticates with multi-factor and timed-access protocols. A nominated Vault Buddy preserves continuity if a key engineer leaves the site. Customers choose how data is written into OSS today, and an offline secure backup and recovery option from Firevault is on the roadmap for operators who want a single supplier for both layers. Every attempt and every action is logged, giving the board, the regulator and the cyber-insurer a defensible audit trail.

  • Golden images and configurations placed on hardware with no network connection. They cannot be scanned, ransomed or exfiltrated remotely from the IT or OT network
  • Multi-factor authentication and timed-access SOPs governed by the Primary End User, with controlled sharing for OEMs, integrators and incident responders
  • Vault Buddy continuity ensures the data remains operational through shift changes, departures and succession events on site
  • Full audit logging of every access attempt, supporting NIS2, the Cyber Assessment Framework, IEC 62443 and stronger cyber-insurance positioning

Master Copies of Every OT Endpoint

Step 1 of 4

Operator workstations, HMIs, engineering laptops and embedded panels are imaged and written to OSS. Each generation is hashed, validated and indexed against the asset register. When a device fails or is compromised, the last known-good master is restored without touching the live network.

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Choose Your Protection

Which OSS Fits?

300GB

Low Use Vault, Deep Cold Storage

From £74.99/mo

inc. VAT · £0 due today

Deep cold storage for decommissioned assets, superseded golden images and historical engineering records.

What 300GB holds

~60,000 high-res photos
~150,000 PDF documents
~1,200 hours of voice recordings
~75 hours of HD video

Use Cases for Securing the OT Estate

  • Decommissioned plant and line records
  • Superseded golden images and firmware
  • Historical safety case and HAZOP records
  • Long-term retention of regulatory submissions
  • Closed change-control and MOC archives

Specifications

Capacity

300GB

Access

2 windows/week

Authentication

Identity-locked

Commitment

36 months

Security & Compliance

NATO-Approved FacilityDSIT-ReferencedGDPR Art. 32Cyber Essentials Plus

How to Get Started

Step 1

Discovery Call

Understand what you need to protect and how you operate.

Step 2

Vault Configuration

Select your tier, capacity, and access model.

Step 3

Identity Verification

Complete KYC/AML and set up multi-factor authentication.

Step 4

Go Live

Data ingestion, access policy activation, and ongoing support.

OSS Butterfly for Operational Technology

One Vault, every party, every stage of the plant.

Offline Secure Storage sits at the centre of the OT estate, owned by the people personally accountable for safety, uptime and recovery. Site onboarding and asset records feed the golden image and configuration vault on one set of wings; the vendor and integrator network and the live recovery workload the team runs in drills and incidents form the other. Nothing is reachable between sessions, and every touch is logged for NIS2, the Cyber Assessment Framework and the safety case.

Plant Manager
Head of OT
CISO
Firevault butterfly mark
Control Engineer
EHS Lead
CIO
Firevault OSS
disconnect to protect
Upper Left Wing

Site Onboarding

  • Asset register and OT inventory captured before commissioning
  • Network map, zones and conduits documented to IEC 62443
  • Safety case, HAZOP and SIL ratings lodged with the site record
  • Operator and engineer access lists tied to the plant
  • Vendor remote-access agreements and break-glass evidence on file
  • Change-control, MOC and patch baselines recorded at handover
Upper Right Wing

Golden Image and Config Vault

  • Golden images of HMI and engineering workstations
  • PLC, RTU and DCS programs and ladder logic
  • SCADA project files and screen sets
  • Safety-system configurations and proof-test records
  • Historian and batch-server baselines
  • P&IDs, electrical drawings and loop sheets
  • Firmware images and signed binaries
  • Recovery runbooks and validated restore evidence
Lower Left Wing

Vendor and Integrator Network

  • OEMs and control-system vendors
  • System integrators and commissioning engineers
  • Maintenance, service and break-fix providers
  • OT-MSSP, IR retainer and forensic specialists
  • Regulators, NCSC, CAs and insurers
Lower Right Wing

Live Recovery Workload

  • Line RestartLNR
  • Site FailoverSFO
  • Tabletop ExerciseTTX
  • Audit Evidence PullAUD
  • Cyber IncidentINC
Archived DataDecommissioned assets, superseded golden images and statutory-retention records, held offline under the operator's sole control.
Bring Your Own Backup and Recovery

You choose how data is written. We hold it offline.

Firevault is the offline storage layer for the OT estate. Your imaging, snapshot and recovery tooling runs on top, writing golden images, control-system configurations and engineering records onto dedicated, disconnected drives inside a Firevault Bunker.

We work alongside the leading OT-grade backup and recovery vendors so operators keep the engine they trust on the line, while the master copy of every plant lives somewhere with no internet connection, no IP address and no API. An offline secure backup and recovery option from Firevault is on the roadmap for customers who want both layers from a single supplier.

Questions

Frequently Asked

Ready to take the next step?

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    Firevault is Offline Secure Storage. Hardware you own, physically disconnected by default, with KYC-verified access. Ransomware-proof by design, not by patch.

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