Legacy Technology: T

Introduction

If your business is still relying on old software or unsupported systems, you might be holding onto more risk than you realise. Legacy technology is one of the biggest blind spots for small and medium businesses — and cybercriminals know it.
As part of Cyber Security Awareness Month, ASD and ACSC are urging organisations to deal with legacy tech before it becomes a liability.

Why Legacy Systems Are Dangerous
•    No security patches: Once a vendor stops support, vulnerabilities remain open forever
•    Compatibility issues: Old systems often can’t run modern security tools
•    Higher costs: Maintaining outdated tech drains resources better spent on secure solutions

Real-World Examples
•    The WannaCry ransomware attack spread worldwide in 2017 because many organisations hadn’t updated Windows.
•    Unsupported email servers are frequent targets for business email compromise (BEC) attacks.

What Businesses Can Do
1.    Identify legacy assets: Run an audit of all systems and software
2.    Prioritise upgrades: Replace critical systems first
3.    Isolate when needed: If upgrade isn’t possible, segment old systems from the internet
4.    Document risks: Make clear when a legacy system is in use and why

How Squaretech Perth Helps
We assist with modernisation roadmaps for businesses in Perth — helping you transition safely from outdated tech without disrupting daily operations.