HESCO Blog

Why Most Manufacturing Facilities Are Vulnerable to Cyberattacks

Written by Daniel Gallipoli | June 2, 2025 1:00:00 PM Z

In the world of industrial automation, few things are as prized as uptime. The ability to keep your lines moving, your equipment humming, and your people productive is the heartbeat of a successful operation. But what happens when an invisible threat can grind it all to a halt?

We're not talking about weather, supply chain delays, or even mechanical failure. We're talking about something that slips in quietly through a USB port, a remote connection, or a phishing email and wreaks havoc before you even realize what's happened. We're talking about cybersecurity.

Industrial facilities operated in a bubble for decades. Your control systems were siloed, your PLCs weren’t connected to the internet, and "cybersecurity" was an IT problem, not a plant floor issue. But not anymore.

The Industrial Cyber Shift

Today’s production lines are smart. They rely on interconnected devices, cloud-based analytics, and remote monitoring. Efficiency has skyrocketed, but so has exposure.

A single vulnerability–an unpatched switch, an insecure login, or an outdated HMI–can open the door to ransomware, data theft, or even a full production shutdown. And the stakes? They're not just operational. They're financial, reputational, and, in some cases, safety-related.

At HESCO, we’ve worked with manufacturers across New England and beyond who’ve had near-misses and a few who weren’t so lucky. The story’s always the same: “We didn’t think we were a target.” But here's the thing: attackers aren’t targeting companies based on size or revenue. They’re targeting based on opportunity.

“Too Small to Get Hacked” Is the Real Vulnerability

There’s a persistent myth in manufacturing circles that cybersecurity is only a concern for the big guys, multi-nationals with sprawling networks and dedicated IT departments. That mindset is one of the biggest vulnerabilities we see.

Most cyberattacks today are automated. Bots scan the web for known exploits like open ports, default passwords, or unsupported firmware and strike wherever they find them. If your system matches the target profile, you’re in the crosshairs. It’s that simple.

Worse yet, attackers know small-to-mid-sized manufacturers often have limited resources, stretched-thin teams, and legacy systems still running critical operations. That’s not just a vulnerability; it’s practically an invitation.

It’s Not Just Data, It’s Downtime

When people think of cyberattacks, they often think of stolen data. And while that’s a major concern in other industries, manufacturing is different. Here, the bigger risk is operational disruption.

Imagine your main PLC goes dark. Or your SCADA system is suddenly encrypted by ransomware. You’re locked out of your line, and every minute is costing you thousands in lost production. If you’re running just-in-time operations, missed deliveries could spiral into broken contracts, customer churn, or worse.

And the damage doesn’t stop at the machine level. Cyberattacks can cause miscommunications between devices, trigger false alarms, or, if they target safety systems, result in genuine physical danger.

You’re Already on the Path to Industry 4.0, But Is Your Security?

The more you automate, the more you expose. That’s not a reason to stop progressing, it’s a reason to be intentional.

Today’s industrial environments are integrating more IoT devices, cloud analytics, and remote maintenance tools than ever before. This is the foundation of Industry 4.0. But it’s also a radically different attack surface than what manufacturers dealt with even five years ago.

Each sensor, camera, edge gateway, and HMI is a potential ingress point. That doesn’t mean they’re bad. It means they need protection. As you modernize your facility, security can’t be an afterthought. It has to be baked in from the start.

And yet, we still see facilities with decades-old controllers, no segmentation between business and plant networks, and control cabinets that haven’t received a firmware update in years–a disaster waiting to happen.

The Role of Regulation and Responsibility

If the rising threat of attack isn’t reason enough to act, the regulatory environment might be. Government agencies, insurance providers, and industry watchdogs are all tightening the screws on cybersecurity compliance.

It’s no longer acceptable to say, “We didn’t know.” If your operation impacts public safety, energy grids, water systems, or the supply chain, you are expected to implement basic cyber hygiene.

And beyond compliance, there’s a growing expectation from customers and partners that you’re taking security seriously. Cybersecurity is quickly becoming a core part of trust and reputation in industrial markets.

Where to Start (If You Haven’t Already)

Here’s the truth: securing your facility doesn’t mean blowing up your operations or investing in a seven-figure software suite. You can start small. But you do need to start.

The first step is always visibility. You need to understand what’s on your network, where your vulnerabilities lie, and what assets are critical to keep running. A sitewide Installed Base Evaluation (IBE) (like the ones we here at HESCO conduct) is a great way to create that foundational map.

From there, it’s about prioritization. Maybe your unmanaged switches are the first to go. Maybe it’s replacing those Windows 7 HMIs or evaluating outdated motor control methods like soft starters vs. drives. Maybe it’s creating real remote access policies instead of relying on “just trust Bob with the login.”

Security isn’t a one-size-fits-all initiative. It’s a layered strategy. But even a few key moves, like segmenting networks or instituting multifactor authentication, can dramatically reduce your risk profile.

Emerging Tech Is Your Ally, Not Your Replacement

One of the most promising developments in industrial cybersecurity is the emergence of AI and machine learning as defensive tools. We’re not talking about handing over control to robots, but equipping your team with smarter tools.

Anomaly detection can spot issues long before they become incidents. Behavioral analysis can flag unusual activity, like someone accessing a system they normally don’t. And automated responses can isolate a compromised asset before the infection spreads. Think of it as a digital immune system for your facility.

But what’s most important to keep in mind: none of this works without a strategy. AI isn’t a silver bullet. It’s a scalpel. And it needs context, data, and planning to be effective. That’s where cybersecurity professionals come in. It’s where partners like HESCO can bridge the gap between your plant operations and your IT aspirations.

Implementation Doesn’t Have to Hurt

We understand that change is hard, especially when it involves critical systems. That’s why any cybersecurity rollout needs to be phased, tested, and backed by operational planning.

We’ve helped facilities roll out security upgrades during planned shutdowns. We’ve supported teams with training that’s specific to their devices, not just general “don’t click that” advice. We’ve implemented redundant monitoring without disrupting uptime.

It’s possible. You just need the right plan and the right people in your corner.

The Bottom Line

Cybersecurity isn’t optional anymore. It’s not “IT’s problem.” It’s not “next year’s project.” It’s now. And it’s everyone’s job.

If your facility relies on connected devices, remote monitoring, or modern automation software, you are at risk. But you’re also capable of securing it if you take the steps now. The longer you wait, the more complex, expensive, and painful it becomes.

So, let’s stop waiting. If you’re not sure where to begin, we’re here to help. Whether it’s an Installed Base Evaluation, a network audit, or simply talking through your current setup, we’ll meet you where you are.

Reach out to HESCO today to start building your cybersecurity roadmap. Because protecting your production line is protecting your bottom line and your future.