The Remote Access Tool That Nearly Shut Down a Food Processing Plant

At 6:42 a.m., the packaging line started acting strangely.

Labels were printing slightly off centre. The conveyor belt stopped for a few seconds, restarted, and then stopped again.

The plant was already preparing for a busy production day. Trucks were scheduled to arrive. Orders had to be packed. Perishable ingredients were moving through the facility.

Every minute mattered.

A maintenance engineer checked the equipment but could not immediately identify the problem. So, he contacted the machine vendor for support.

The vendor’s technician suggested a quick solution:

“Give me remote access. I’ll take a look.”

Within minutes, the technician was connected to the plant’s systems. The issue was fixed, production continued, and everyone moved on.

Or so they thought.

Three days later, the cybersecurity team noticed something unusual.

A remote-access session had started at 2:17 a.m.

No maintenance work was scheduled.

No engineer was working.

And the account used to log in belonged to a contractor who had left the company months earlier.

That was when a routine support request turned into a cybersecurity investigation.

The Convenience That Created a Risk

Remote-access tools are widely used in manufacturing and industrial environments.

They allow technicians to troubleshoot equipment, install updates, and resolve technical issues without travelling to the site. For a food processing plant, this can save hours of downtime.

When machines stop, production slows. Delays can affect packaging, deliveries, inventory, and product quality.

Remote access helps businesses respond faster.

But it can also create an entry point for attackers.

In this case, the remote-access tool was connected to systems that supported the plant’s operational technology, or OT, environment.

OT systems control physical processes. They help run equipment such as:

• Conveyor belts

• Packaging machines

• Refrigeration systems

• Industrial sensors

• Production-line controllers

Unlike a regular office computer, a problem in an OT environment can affect physical operations.

A cyberattack could interrupt production, change equipment settings, or cause machines to behave unexpectedly.

And someone had found a way into the plant.

The Account Everyone Forgot

The cybersecurity team began reviewing the remote-access logs.

They discovered that the account belonged to a former contractor.

The account had been created during an earlier maintenance project. When the contractor left, the access was never removed.

The password had not been changed.

No one had reviewed the account.

Over time, it became an invisible doorway into the plant’s network.

The account was no longer being used, so it received very little attention.

But attackers do not need a new doorway when an old one is still open.

Using the forgotten credentials, someone logged into the remote-access platform and began exploring the network.

At first, the activity was quiet.

They viewed connected devices.

They checked network information.

They identified systems linked to the packaging line.

Then they attempted to access a workstation used by plant engineers.

That was when the cybersecurity team noticed the unusual activity.

The Production Line Was Closer to Stopping Than Anyone Realised

The attacker had not shut down the plant.

Not yet.

But they were moving closer to systems that could affect production.

If they had reached the industrial control environment, they might have been able to interrupt packaging operations, modify equipment settings, or cause production delays.

For a food processing plant, even a short disruption can create a chain reaction.

Production schedules may be delayed.

Perishable ingredients may be wasted.

Temperature-controlled products may be affected.

Orders may not leave on time.

Employees may be forced to stop work while systems are inspected.

The financial impact can grow quickly.

But the consequences may go beyond lost revenue.

A cybersecurity incident involving industrial systems can raise concerns about product quality, operational safety, regulatory compliance, and customer trust.

The plant was only one compromised account away from a much larger problem.

The Security Team Responds

The cybersecurity team acted quickly.

They disabled the former contractor’s account and ended all active remote sessions.

External access was temporarily restricted.

Engineers checked the affected systems to confirm that no equipment settings had been changed.

The team reviewed network activity and investigated whether the attacker had reached any critical systems.

Fortunately, the attacker had not gained access to the plant’s most important industrial controllers.

Production was paused briefly while the environment was checked.

A major shutdown was avoided.

But the investigation revealed a bigger issue.

The plant had invested in protecting its IT environment. It had firewalls, endpoint security tools, and email protection.

However, remote access to operational systems had not received the same level of attention.

The connection was trusted because it belonged to a known vendor.

The account was ignored because the contractor had already left.

The risk did not come from advanced malware.

It came from something much simpler:

A forgotten account.

Why Remote Access Is a Growing OT Cybersecurity Risk

Remote access is not the problem.

In many industries, it is essential.

The risk begins when remote connections are treated as temporary tools instead of long-term entry points.

Every remote-access platform adds to an organisation’s attack surface.

Every vendor account creates another identity that must be managed.

Every connection to an OT environment must be monitored and controlled.

Organisations should regularly ask:

• Who currently has remote access?

• Which systems can they access?

• Is that access still necessary?

• Are inactive accounts removed?

• Is multi-factor authentication enabled?

• Are remote sessions monitored?

• Can access be limited to specific times?

• Are IT and OT networks properly separated?

These questions may sound simple.

But simple gaps can lead to serious incidents.

The Biggest Cybersecurity Risks Are Sometimes the Ones You Forget

Many cybersecurity stories begin with sophisticated malware, ransomware, or highly advanced attacks.

But not every incident starts that way.

Sometimes, the risk is an old vendor account.

A remote-access tool that was never reviewed.

A password that remained unchanged for years.

A connection that everyone assumed was secure.

Cybersecurity is not only about detecting new threats.

It is also about finding access that should no longer exist.

The food processing plant avoided a major shutdown because its security team detected unusual activity before the attacker reached critical systems.

But the outcome could have been very different.

One forgotten account nearly became the reason an entire production line stopped.

Secure Remote Access Before It Becomes a Business Risk

Remote access helps businesses stay connected, responsive, and efficient.

But every remote connection should be treated as a controlled gateway, not an open door.

Organisations can reduce remote-access cybersecurity risks by:

• Removing unused employee and vendor accounts

• Using multi-factor authentication

• Limiting access to approved systems

• Allowing access only when it is required

• Monitoring and recording remote sessions

• Reviewing third-party access regularly

• Separating IT networks from critical OT environments

• Conducting regular vulnerability assessments and penetration testing

These measures can help organisations identify security gaps before attackers find them.

Final Thoughts

The plant did not nearly shut down because of a complex cyber weapon.

It nearly shut down because an old account was still active.

The remote-access tool was useful.

The forgotten access was dangerous.

In industrial environments, cybersecurity is not only about protecting data. It is about protecting the systems that keep production moving.

Because when an attacker gains access to operational technology, the consequences do not always stay on a screen.

Sometimes, they stop the machines.

A cyber incident can quickly disrupt operations and increase business risk.

WhiteKnight provides Cybersecurity Incident Response services to help organisations contain threats, investigate incidents, and support recovery.

When an attack is already underway, a fast and effective response can make all the difference.

Want to see how a cyberattack can affect manufacturing operations in the real world?

Read our related blog: Ransomware Attack on a Manufacturing Plant: A Real-World Incident Response Story to explore how a ransomware incident unfolded, the impact it had on operations, and why a fast, coordinated incident response is critical.