LIVE ENVIRONMENT
Protect what is running.
Understand the system, reduce dangerous paths, detect meaningful change, and prepare to recover.
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Resilience for systems that cannot stop.
QuietHours connects cybersecurity evidence to operational consequence, engineering action, and recovery to a known safe state.
Passive-first. Change-controlled. Vendor-neutral.
OPERATING MODEL ASSURANCE PATH ACTIVE
NEW PROJECT
Assure what comes next.
Set requirements early, test designs and suppliers, validate commissioning, and hand over a secure baseline.
QUIETHOURSEvidence → decision → safe action
IT security asks whether a system is vulnerable. OT security must also ask what happens to operations when it fails—and how to change it safely.
Two realities.
One resilience model.
Start with the operating situation, not a catalogue of tools. We shape the work around production constraints, engineering ownership, and the decisions your team must make next.
Keep necessary operations available.For operating sites
- Plants, utilities, terminals, rail, and manufacturing
- Brownfield networks and inherited architectures
- OEM access, contractor devices, and removable media
- Maintenance windows and constrained remediation
Make security testable before handover.For projects and major changes
- New facilities, expansions, and control-system refreshes
- FEED, EPC, and package-vendor requirements
- FAT, SAT, commissioning, and exception management
- As-built evidence and operational onboarding
From unknown estate to safe action.
Every engagement creates a line of sight from the technology to the process it supports, the consequence that matters, and the action that operations can accept.
See the evidence you receive- 01UnderstandAssets, communications, dependencies, ownership
- 02ModelThreat paths, process consequence, current controls
- 03Change safelyEngineering plan, approvals, test and rollback
- 04Prove resilienceDetection, restoration, retest, safe restart
Work that leaves your team with something usable.
Begin with a bounded baseline or bring us into a specific architecture, detection, recovery, or project-assurance problem.
OT resilience baselineSee the environment clearly before deciding what to change.
Passive-first discovery, communication mapping, critical-process analysis, threat-path modelling, and a prioritized engineering roadmap for one bounded site or system.
OutcomeA verified current state and a decision-ready improvement plan.
Segmentation and secure vendor accessReduce dangerous pathways without breaking necessary operations.
Zone-and-conduit design, industrial DMZ architecture, permitted-flow engineering, remote-access governance, implementation support, and change-controlled validation.
OutcomeA target architecture, change package, test plan, and rollback path.
Detection and response readinessGive the SOC the process context it needs to make useful decisions.
Telemetry architecture, OT detection use cases, ATT&CK for ICS scenario mapping, threat hunting, alert tuning, operations-specific triage, and joint exercises.
OutcomeCoverage your SOC can operate, tune, and test.
Incident and recovery readinessProve that critical systems can return to a known, safe state.
Backup and logic-file review, recovery dependencies, clean-build procedures, isolation decisions, restoration testing, degraded-operation planning, and safe-restart criteria.
OutcomeTested playbooks and recovery evidence—not only completed backup jobs.
Project lifecycle assuranceBuild cybersecurity into the project before commissioning makes change expensive.
Requirements for FEED and procurement, supplier evidence, architecture reviews, FAT and SAT cybersecurity tests, commissioning validation, and secure operational handover.
OutcomeTraceable assurance from design decisions to the as-built baseline.
Evidence for the people who must approve the change.
Operators, engineers, cybersecurity teams, management, vendors, and auditors should be able to work from the same picture.
- Verified asset and communication map
- Zone-and-conduit architecture
- Operational threat scenarios
- Engineering remediation backlog
- Detection coverage and response logic
- Recovery dependencies and safe-restart criteria
Known configuration
Tested restoration
Safe restart
“A completed backup job is not the same as a recoverable plant.”
We validate whether critical systems can be restored, dependencies are understood, and operations can return to a known, safe state.
Built for operational constraints.
Active testing belongs in representative labs, digital twins, vendor environments, FAT environments, or approved outage windows whenever possible.
- Default posturePassive-first discovery
- Live changesWritten authorization and rollback
- PrioritizationOperational consequence, not CVSS alone
- Framework contextIEC 62443, NIST, and applicable national guidance
Tell us what must keep running.
Share the site, system, project stage, or recovery concern. We will help shape a safe first scope.
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