Cybersecurity in Manufacturing: Lessons From Recent Attacks

Manufacturing companies have become prime targets for cybercriminals, and the trend is accelerating. What makes this industry so attractive isn’t just the money involved, it’s the combination of high-value intellectual property, complex supply chains, and the reality that production can’t simply “pause” while a threat is handled. When the stakes are uptime, safety, and delivery commitments, attackers know manufacturers are more likely to feel pressure to pay and recover quickly.

Even manufacturers with basic protections like antivirus and firewalls are realizing that modern threats are not built to be stopped by basic tools alone. Today’s attacks often involve credential theft, supply chain compromise, ransomware combined with data extortion, and targeted disruption of operational technology (OT). To strengthen defenses without disrupting operations, manufacturers need to learn from what’s happening across the industry and apply those lessons to their own environments.

This cybersecurity in manufacturing guide breaks down recent attack patterns and what manufacturers can do differently in 2026.

Why Manufacturing Companies Are Being Targeted More Often

Manufacturing sits at the intersection of data and physical output. Attackers understand that downtime isn’t just inconvenient. It’s expensive, operationally damaging, and in some cases, dangerous. Reports show ransomware activity continues to rise across industrial operators, with OT environments drawing increased attention.

In many plants, legacy equipment, outdated operating systems, and limited segmentation between IT and OT make it easier for attackers to move laterally once they gain entry. Add remote access requirements for vendors, hybrid workforce connectivity, and cloud-connected ERP systems, and the attack surface grows fast.

Manufacturers also hold valuable assets beyond cash. Proprietary product designs, engineering specifications, supplier pricing structures, and customer contracts are all high value on the black market. That’s why more attackers are shifting to “extortion-only” tactics, stealing data even when encryption fails, then threatening to leak it. Sophos has reported this trend increasing even as organizations get better at blocking encryption attempts.

What Recent Attacks Reveal About Today’s Threat Landscape

The most useful lessons come from the patterns that keep showing up in real incidents.

Ransomware Isn’t Just About Encryption Anymore

Ransomware remains one of the biggest threats to manufacturing, but the playbook has evolved. Many attacks now include data theft first, then encryption, then extortion. That means even organizations with strong backups can still face major risk if sensitive vendor, product, or employee data is stolen.

A widely reported case involving Clorox showed how disruptive an attack can be even for a large organization with resources. The company disclosed significant operational disruption and financial impact tied directly to recovery efforts, illustrating that even strong brands can suffer extended consequences from a single compromise.

For manufacturers, the message is clear: business continuity planning must address both system recovery and data exposure.

Supply Chain Attacks Can Shut Down Production

Manufacturers depend on interconnected suppliers, just-in-time delivery, and shared systems. When one partner is compromised, it can trigger disruptions across the entire chain. A well-known example is the cyberattack on Toyota supplier Kojima Industries that forced Toyota to pause production at multiple plants. Even though production resumed quickly, the incident shows how one supplier event can cascade into widespread manufacturing downtime.

This matters even for mid-sized manufacturers. If your production relies on supplier access, vendor-managed systems, or shared portals, your security is only as strong as the weakest connected link.

OT Environments Are Increasingly in the Crosshairs

Industrial operators are facing growing pressure from ransomware groups, and OT assets are often part of the target. Threat reporting shows ransomware targeting industrial operators surged sharply in early 2025, reinforcing how aggressively attackers are focusing on environments where downtime is costly.

In OT-heavy settings, security can’t depend only on corporate IT practices. Cybersecurity in manufacturing requies controls designed specifically for plant networks, industrial protocols, and uptime requirements.

What Attackers Are Targeting in Manufacturing Environments

To reduce risk, it helps to understand what attackers want and where they look first.

Remote Access Entry Points

RDP exposure, outdated VPN appliances, weak credentials, and unmanaged vendor access remain common entry points. Attackers don’t need to “hack” advanced systems if they can log in as a legitimate user. That’s why multi-factor authentication and strict access policies matter more than ever.

Identity and Active Directory Control

Once attackers gain identity control, they can move laterally across systems, deploy ransomware, and disrupt operations. Many manufacturing attacks escalate quickly because identity systems are over-permissioned or poorly segmented.

ERP, Inventory, and Supply Chain Data

Cloud-based ERP systems and warehouse management platforms are essential for modern manufacturing, but they’re also attractive targets. Disrupting these tools can stop production and shipping, while stealing the data gives attackers leverage.

OT Systems and Production Visibility

SCADA systems, PLC networks, and industrial monitoring environments are critical for plant operations. Attackers may not need to fully compromise OT to cause disruption. If they can impact visibility, sensor communication, or system scheduling, they can stall output and trigger chaos.

Discover why firewalls aren’t enough for cybersecurity for manufacturing. Learn about ransomware, supply chain attacks, and OT/ICS risks.

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Practical Lessons Manufacturers Can Apply Right Now

The goal isn’t to become paranoid. It’s to build a cybersecurity strategy that reduces exposure while keeping operations running.

Segment IT and OT Networks to Limit Blast Radius

One of the biggest weaknesses in manufacturing is flat networks. If attackers can move freely from an office workstation to a production system, the impact becomes severe. Network segmentation helps keep threats contained, allowing your IT team to isolate only the affected zone rather than shutting down everything.

Build Visibility With Proactive Monitoring

You can’t protect what you can’t see. Proactive monitoring helps detect unusual behavior early, including failed logins, lateral movement, and strange outbound traffic patterns. The earlier you spot it, the smaller the incident becomes.

This is one of the most important shifts manufacturers can make: move from reactive security to real-time visibility.

Strengthen Identity Security With MFA and Least Privilege

Identity is the most common doorway into manufacturing networks. MFA should be required for remote access, privileged accounts, and cloud systems. Least privilege should be enforced across users and service accounts so attackers cannot gain administrator access from a basic login.

Treat Backup and Recovery Like a Production Requirement

Backups should be frequent, tested, and protected from tampering. Recovery should be designed around your manufacturing environment, not just your business office. That includes restoring ERP operations, production systems, and critical servers in the correct order.

The Norsk Hydro ransomware incident is often referenced as an example of resilience planning and recovery strategy under pressure, showing the value of preparation, segmentation, and controlled restoration.

Want a Clear Picture of Your Current Cybersecurity Posture?

WTC supports manufacturers with managed cybersecurity that prioritizes uptime, visibility, and risk reduction. From network segmentation and monitoring to incident response readiness, we help you strengthen defenses without slowing production.

If you’re unsure where your biggest vulnerabilities are, start with a cybersecurity risk assessment. It’s a practical, low-pressure way to identify gaps, prioritize improvements, and build a cybersecurity risk management plan that fits your operation.

Ready to take the next step? Request a consultation and get a clear roadmap for stronger cybersecurity in manufacturing.