The Complete Cybersecurity Checklist for Manufacturers
A detailed audit resource tailored for today’s connected manufacturing operations.
In the modern manufacturing landscape, cybersecurity is no longer a back-office issue, but a frontline necessity.
With increased digitalization, IoT integration, and supply chain connectivity, manufacturers face growing risks from ransomware, IP theft, operational disruption, and regulatory noncompliance. Your production lines, ERP systems, and vendor relationships are now as vulnerable as your firewalls.
To help manufacturers navigate these challenges, USX Cyber has developed the complete cybersecurity checklist for manufacturers: a practical audit resource covering both operational technology (OT) and information technology (IT).
Whether you’re a mid-sized fabricator or a global defense supplier, this checklist will help you reduce risk, harden systems, and meet key compliance standards.
1. Network Segmentation and Perimeter Defense
Why it matters: Flat networks enable lateral movement for attackers. Segmentation protects critical OT systems from IT-borne threats.
Segment production, administrative, and third-party access zones
Use firewalls to isolate ERP, MES, and SCADA systems
Apply IP allow lists for vendor and remote access
Deploy next-gen firewalls and intrusion prevention systems (IPS)
2. ERP Security: Protecting the Brain of the Business
Why it matters: Your ERP system holds sensitive data from customer information to pricing models and production schedules.
Restrict ERP access via role-based permissions
Enforce multi-factor authentication (MFA) for all ERP users
Monitor database activity for anomalies or unauthorized changes
Conduct regular audits of ERP user roles and permissions
Back up ERP data regularly with offline, immutable copies
3. Endpoint Protection and OT Device Security
Why it matters: Manufacturing environments include diverse endpoints: engineering workstations, PLCs, sensors, and more.
Use endpoint detection & response (EDR) tools across all IT assets
Deploy secure firmware updates on industrial control systems (ICS)
Monitor USB and removable media access on production machines
Ensure legacy OT equipment is isolated or monitored for risk
4. Compliance for Manufacturers
Why it matters: Noncompliance with frameworks like CMMC, NIST 800-171, SOC 2, or ITAR can lead to lost contracts, legal penalties, and reputational harm.
Determine your compliance scope (CMMC Level 1–3, NIST 800-171, etc.)
Map security controls using a platform like Guardient®
Automate evidence collection and audit preparation
Maintain audit trails and incident logs for regulatory reporting
Assign a compliance officer or designate a managed service provider (MSP)
5. Employee Awareness and Access Control
Why it matters: Most breaches begin with human error: phishing, weak passwords, or accidental data exposure.
Enforce strong password policies with regular updates
Train staff on phishing detection and secure data handling
Conduct role-based access reviews quarterly
Use MFA for VPN, email, ERP, and cloud services
Offboard terminated employees within 24 hours
6. Real-Time Monitoring and Incident Response
Why it matters: The sooner you detect a breach, the faster you contain the damage.
Deploy 24/7 SOC monitoring or SOC-as-a-Service (like Guardient®)
Implement centralized logging (SIEM) across IT/OT systems
Test your incident response plan twice a year
Identify who declares a breach and how fast they must act
Ensure ransomware readiness: backups, containment, and recovery
7. Business Continuity and Disaster Recovery
Why it matters: Downtime in manufacturing = missed deadlines, lost revenue, and reputational risk.
Maintain fully tested backups of ERP, MES, and SCADA systems
Conduct tabletop exercises for cyber disaster scenarios
Define RTO (Recovery Time Objective) and RPO (Recovery Point Objective)
Store backups in geographically separate locations
Assign DR responsibilities to individuals, not just departments
8. Vendor and Third-Party Risk Management
Why it matters: Your cybersecurity is only as strong as your weakest supplier.
Vet vendors for security posture and regulatory compliance
Use contracts with data handling and breach notification clauses
Monitor third-party access in real time
Limit vendor access to the minimum necessary systems
Require vendors to maintain their own incident response protocols
Cybersecurity is Operational Risk
The manufacturing sector is under increasing pressure from regulators, partners, and attackers alike. Staying secure is no longer just about preventing breaches, but about ensuring operational continuity, winning contracts, and protecting your intellectual property.
Use this cybersecurity checklist for manufacturers as both a readiness assessment and a roadmap for continuous improvement. If you’re looking for a partner to help streamline the journey, USX Cyber is ready to help.