Cybersecurity for Manufacturing

Manufacturing is among the most targeted industries for ransomware: attackers know that halting production costs far more per hour than the ransom demand. OT/IT convergence has connected shop-floor control systems to corporate networks, and that connection is the primary attack path. A compromised IT workstation can now reach PLCs and SCADA systems that control physical processes.

garrisonOne helps manufacturers protect both the office network and the factory floor: assessing OT/IT boundaries, implementing network segmentation, satisfying CMMC requirements for defense contractors, and building the incident response procedures that protect production continuity when an attack occurs.

71%
of ransomware attacks
target OT environments
$4.7M
avg cost of a manufacturing
ransomware incident
#1
most targeted industry
for ransomware in 2024
200+%
increase in ICS/OT attacks
over the past three years

The Threat Landscape

Ransomware Targeting Production Systems

Ransomware groups specifically target manufacturers because production downtime creates immediate financial pressure. Modern ransomware campaigns include OT-aware variants that attempt to spread from IT networks to industrial control systems. The combination of encrypted IT systems and halted production creates compounding pressure that leads many manufacturers to pay.

OT/IT Convergence Attack Paths

As manufacturers connect OT systems to IT networks for efficiency and remote monitoring, they create attack paths that did not previously exist. An attacker who compromises an IT endpoint can pivot toward engineering workstations, historians, and ultimately PLCs. Most manufacturers have not redesigned their network architecture to account for this expanded attack surface.

Supply Chain & Third-Party Vendor Risk

Manufacturing supply chains involve hundreds of suppliers, logistics providers, and maintenance vendors with varying levels of network access. Third-party remote access to OT systems for maintenance is a persistent vulnerability. Attackers who cannot breach a manufacturer directly target less-defended suppliers to establish a foothold.

Legacy Systems & Unpatched ICS Devices

Manufacturing OT environments contain equipment designed for decades of continuous operation without security updates. PLCs, HMIs, and SCADA components running end-of-life operating systems with no patch path are common. Attackers enumerate these devices using public ICS search engines and exploit known vulnerabilities without needing sophisticated techniques.

How AI Is Being Used to Attack This Industry

AI-Generated Spear-Phishing Against Plant Operations

AI enables attackers to generate highly personalized phishing targeting plant managers, maintenance engineers, and OT staff using information from LinkedIn, supplier websites, and equipment manuals. An email referencing a specific PLC model, a named maintenance contractor, or an upcoming production schedule is significantly more convincing than generic phishing.

Autonomous Reconnaissance of ICS Environments

AI-powered tools can conduct automated reconnaissance of industrial control system environments: scanning for exposed HMIs, identifying OT protocols on the network, and enumerating equipment types from passive traffic analysis. This intelligence is used to plan targeted attacks against specific control system vulnerabilities.

AI-Optimized Lateral Movement to OT Networks

AI attack tools optimize lateral movement paths through complex manufacturing networks, identifying the fastest route from an initial IT foothold to OT systems. These tools learn from detection events, adapting their movement patterns to avoid triggering alerts while progressing toward industrial control system targets.

Deepfake Voice for CEO/CFO Fraud in Procurement

Manufacturers with large procurement budgets are targeted by deepfake voice fraud impersonating executives to authorize fraudulent purchase orders or redirect supplier payments. AI voice cloning requires only a short audio sample: available from earnings calls, conference presentations, or company videos: to produce convincing impersonations.

How We Help

OT/IT Network Segmentation

We assess and implement segmentation between OT and IT networks: DMZ architectures, unidirectional gateways, and firewall policies that allow necessary connectivity while preventing attackers from pivoting from office to factory floor.

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ICS/SCADA Security Assessment

We assess ICS environments for remote access exposure, default credentials, unencrypted protocols, and patch gaps: following ICS-CERT guidance and NIST SP 800-82 for industrial control system security.

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CMMC Compliance for Defense Contractors

We guide defense manufacturers through CMMC Level 1 and Level 2: assessment, remediation, System Security Plan development, and C3PAO assessment readiness for DoD contracts.

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Ransomware Preparedness & Response

We assess ransomware resilience including backup architecture, segmentation, and detection. We build and test IR playbooks specific to manufacturing before an attack occurs, not after.

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Supply Chain & Third-Party Risk

We build supplier security assessment programs that identify third-party risk, establish security requirements for high-risk suppliers, and monitor for supply chain compromise.

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Managed SOC for Manufacturing Environments

Continuous monitoring tuned to manufacturing network patterns: covering IT/OT boundary traffic, privileged access behavior, and the lateral movement patterns that precede major manufacturing incidents.

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How We Use AI to Protect You

OT-Aware Behavioral Monitoring

We deploy monitoring tuned to manufacturing network behavior: understanding what normal Modbus, DNP3, and EtherNet/IP traffic looks like so anomalies are detected without flooding analysts with false positives from industrial protocol activity.

AI-Accelerated Incident Scoping

When a potential OT incident occurs, AI-assisted investigation tools compress scoping time: determining which systems were accessed, whether OT networks were reached, and what data or configurations may have been exfiltrated before production decisions must be made.

AI-Powered Phishing Detection

Manufacturing staff receive AI-generated spear-phishing targeting plant operations. We deploy AI-powered email analysis that evaluates message content, sender reputation, and behavioral signals at a level of sophistication that signature-based filters cannot match.

Threat Intelligence for Manufacturing Sector

We use AI-driven threat intelligence specific to manufacturing: tracking ransomware groups active against the sector, monitoring for credentials from manufacturing domains on criminal forums, and analyzing ICS-specific threat actor TTPs.

Regulatory & Compliance Requirements

CMMC: Cybersecurity Maturity Model Certification

Mandatory for manufacturers with DoD contracts involving CUI. CMMC Level 2 aligns to NIST SP 800-171's 110 security requirements. Non-compliant contractors face contract loss and disqualification from future DoD work. C3PAO assessments are required for most Level 2 contracts.

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NIST SP 800-82: ICS Security

NIST SP 800-82 provides guidance on industrial control system security: network architecture, access controls, patch management, and incident response for OT environments. Referenced in CMMC and increasingly in customer contracts requiring demonstrated OT security practices.

View NIST Services

NIST CSF: Cybersecurity Framework

Widely adopted as a baseline cybersecurity framework for manufacturers. Large customers and prime contractors increasingly require suppliers to demonstrate NIST CSF maturity as a condition of the supply chain relationship.

View NIST CSF Services

State & Sector Cyber Incident Reporting

State data breach notification laws apply when manufacturing companies experience breaches involving employee or customer personal data. Critical infrastructure manufacturers may have additional federal incident reporting obligations under CISA's cyber incident reporting rules.

View Compliance Services

Why Organizations Choose garrisonOne

  • OT/IT Security Expertise: We understand the specific security challenges at the intersection of operational technology and information technology: most cybersecurity firms do not have this expertise.
  • CMMC Compliance for Defense Contractors: We guide defense manufacturers through CMMC compliance: one of the most complex requirements specific to the manufacturing sector.
  • Ransomware Resilience as a Core Deliverable: Manufacturing's high ransomware risk means resilience planning is a core deliverable in every engagement, not an afterthought.
  • Production-Aware Security: Every recommendation accounts for production continuity requirements. We do not recommend controls that would halt the factory floor.
  • Supply Chain Risk Programs: We build supplier security programs appropriate for manufacturing supply chain complexity: from critical component suppliers to logistics providers.
  • Practical Remediation, Not Just Findings: We implement the controls we recommend. Assessment-to-remediation in a single engagement without handoff gaps.
Case Study: Manufacturing Security Assessment

Industrial Distributor: Full Security Assessment & Remediation Roadmap

A regional industrial distributor with 200 employees and multiple warehouse locations had no formal security program and was about to sign a defense supply chain contract requiring CMMC compliance. garrisonOne completed a full assessment, built their remediation roadmap, and prepared them for CMMC Level 1 certification.

Read the Full Case Study
100%Critical Gaps Closed
CMMC L1Certification Achieved
60 daysFull Remediation Timeline

See How We Have Helped Similar Organisations

Security Assessment for Wholesale Distributor

Manufacturing/Distribution: Network segmentation, access controls, and policy gaps identified

Read Case Study

Frequently Asked Questions

Why is manufacturing a top target for ransomware?

Manufacturing organizations face production pressure that makes them more likely to pay ransoms quickly: every hour of downtime costs real money in lost production, customer penalties, and supply chain disruption. Attackers price ransoms based on perceived ability to pay and urgency to resolve.

What is OT/IT convergence and why does it create security risk?

OT/IT convergence refers to the increasing connectivity between operational technology (PLCs, SCADA) and information technology (corporate networks, cloud). This enables efficiency benefits like remote monitoring but creates attack paths from the office network to production systems. A compromised IT system can potentially reach OT systems.

Is CMMC required for all manufacturers?

CMMC is required for manufacturers that are part of the Defense Industrial Base and handle Federal Contract Information or Controlled Unclassified Information under DoD contracts. If your company has DoD contracts or subcontracts to a prime defense contractor, CMMC requirements likely apply.

What cybersecurity frameworks apply to manufacturing?

The primary frameworks are NIST SP 800-82 (ICS Security), IEC 62443 (Industrial Cybersecurity), NIST CSF (broadly applicable), and CMMC (for defense contractors). Most manufacturers with DoD contracts need to address both CMMC and NIST SP 800-171.

How should OT patching be handled in manufacturing?

OT patching requires a different approach than IT: many ICS systems cannot be patched during production hours and some vendors will not support patched versions. The approach involves compensating controls: network segmentation, application whitelisting, monitoring: with a patch schedule tied to planned maintenance windows.

What should a ransomware response plan include for a manufacturer?

A manufacturing ransomware response plan must include: isolation procedures that prevent spread without halting production, backup restoration procedures tested against production systems, alternate production procedures for the outage period, a decision framework for engaging law enforcement, and customer communications templates.

How long does CMMC preparation take?

Preparation time depends on starting posture. Organizations with mature IT practices can be C3PAO-ready in three to six months. Organizations starting from scratch typically need nine to twelve months. A gap assessment in the first two weeks gives an accurate timeline.

Can a security assessment cover both IT and OT environments?

Yes: we conduct assessments that span both IT and OT environments. The OT assessment portion uses passive techniques appropriate for live production environments, following ICS-CERT guidance. Findings cover both domains with a unified risk picture and remediation roadmap.

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