Cyber Awareness Month - Legacy Technology

October 2025

Time to Let Go: How Legacy Tech is Putting Your Business at Risk

October is Cyber Security Awareness Month, and this week’s theme from the Australian Cyber Security Centre (ACSC) hits close to home - it’s time to face the truth about legacy technology.

We’ve all heard the excuses:

“It still works.”
“It hasn’t been hacked yet.”

But in cybersecurity, “it works” is not the same as “it’s safe.”

At Matrium Technologies, we’ve seen how outdated systems quietly increase risk, slow innovation, and block organisations from building the resilient, modern environments they need. Breaking up with legacy tech isn’t just an IT decision - it’s a business imperative.

Legacy Tech: The Silent Security Gap

Legacy systems often run unsupported software, lack essential patches, and can’t integrate with modern security tools. These blind spots become ideal hiding places for attackers, who know that many organisations simply don’t have visibility into older parts of their infrastructure.

What’s worse - these systems are often critical to daily operations, making them difficult to replace. Attackers know this too, which is why legacy platforms are often the first targets when they want to establish a foothold inside a network.

When “If It Ain’t Broke” Becomes Dangerous

Legacy technology doesn’t just make you more vulnerable - it holds your organisation back. The longer outdated systems remain, the harder and more expensive it becomes to evolve. Common impacts include:

• Increased attack surface: Unpatched vulnerabilities are an open door for cybercriminals.

• Integration limits: Older platforms can’t keep up with cloud, automation, or modern identity controls.

• Operational drag: Teams spend time maintaining outdated systems instead of innovating.

• Compliance risks: Unsupported systems make it difficult to meet modern regulatory obligations.

The reality? Every day you delay, the gap between your business and your competitors widens.

How to Start the Breakup

Breaking up with legacy tech doesn’t mean pulling the plug overnight - it means creating a clear, practical plan to move forward. Here’s how to start:

1. Identify outdated or unsupported systems.

2. Assess their role, risk level, and business impact.

3. Prioritise which systems to modernise first.

4. Isolate high-risk assets while you plan replacements.

5. Monitor continuously with modern detection and response tools.

The goal isn’t just to replace technology - it’s to build a defensible, adaptable environment that can grow with your business.

Where Matrium Can Help

At Matrium Technologies, we help organisations modernise securely and strategically. Our team works with leading network and security solutions to deliver:

• Actionable insights to guide your modernisation roadmap

• Comprehensive visibility across legacy, hybrid, and cloud environments

• Managed Security to reduce exposure risk from legacy tools

We don’t just secure your systems - we future-proof them.

Final Thoughts

Breaking up with legacy tech isn’t just about security - it’s about progress.

It’s about freeing your teams to innovate, improving customer trust, and building a foundation for long-term resilience.

This Cyber Security Awareness Month, start the conversation. Build the roadmap.
Because your business deserves better - and so does your future.