Is Your Small Business a Ransomware Target? What Actually Stops an Attack
Security · Small Business
Is Your Small Business a Ransomware Target? What Actually Stops an Attack
Ransomware doesn't just happen to big companies. In Australia, small and medium businesses are consistently the most common victims — not because they have more valuable data than a large enterprise, but because they're an easier way in. This guide explains, in plain English, how these attacks usually start and the handful of things that actually make a difference.
How these attacks usually start
Ransomware groups rarely "hack" their way in through clever code. Far more often, they walk through a door that was left unlocked — an old VPN or firewall device that was never patched, a password that was never changed, or a staff member who clicked the wrong link.
One well-documented example: the Australian Cyber Security Centre (ACSC) has warned about ongoing exploitation of a known vulnerability in SonicWall SSL VPN devices (CVE-2024-40766), which the Akira ransomware group has used to gain initial access to business networks. Security researchers continued tracking Akira actively targeting Australian small and medium businesses well into 2026, particularly in manufacturing, professional services and other sectors where a few days of downtime is genuinely costly. The lesson isn't specific to one brand of VPN device — it's that any network appliance running outdated firmware is a standing invitation.
What ransomware actually does
Once inside a network, ransomware typically encrypts files across every PC and server it can reach, then demands payment for a decryption key — often alongside a second threat to publish stolen data if you don't pay ("double extortion"). Even businesses with good intentions to "just restore from backup" sometimes discover their backup was connected to the same network and was encrypted too.
The basics that actually stop most attacks
You don't need an enterprise security budget to meaningfully reduce your risk. In order of impact:
| Step | Why it matters |
|---|---|
| A tested backup, kept offline or immutable | If your data is encrypted but a clean, disconnected backup exists, you can recover without paying anyone. This is the single most effective protection there is. |
| Keep firewalls, VPN devices and software patched | Most ransomware access starts with a known, already-patched vulnerability that simply wasn't applied. Set a regular schedule to check for and apply updates. |
| Reset passwords after any firmware update | Vendors including SonicWall have specifically advised resetting VPN account passwords after patching, since old credentials can remain valid otherwise. |
| Staff awareness of phishing and suspicious links | Credential theft via phishing remains a common alternative entry point alongside device vulnerabilities. |
What to do if you suspect a compromise
Disconnect affected devices from the network (but don't power them off, which can destroy evidence useful for recovery). Don't pay the ransom before getting advice — the ACSC recommends against paying, since it doesn't guarantee data return and can mark you as a repeat target. Report the incident via ReportCyber and get professional incident response help before doing anything else.
Where Macrotech fits in
We're not a managed IT security provider and we don't manage firewalls or VPN appliances directly — but a large part of ransomware resilience comes down to the basics: PCs that are actually up to date, a backup strategy that's actually been tested, and general network hygiene. If you run a small business in Carrum Downs, Frankston, Cranbourne, Lyndhurst, Langwarrin, Seaford, Skye or Patterson Lakes and want a second opinion on your PC fleet's patch status and backup setup, we're happy to take a look.
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Book a Service Call (03) 8759 1801Frequently asked questions
Is my small business really a target for ransomware?
Yes — small and medium businesses are consistently the most common victims of ransomware groups, precisely because they usually have weaker defences and fewer dedicated IT staff than large enterprises, while still holding data and cash flow worth attacking.
What's the single most effective thing we can do to protect against ransomware?
A tested, offline or immutable backup. If your data is encrypted by ransomware but you have a recent backup that wasn't also affected, you can recover without paying anyone. Patched, up-to-date software and network devices is the second most important step.
We don't have IT staff — can Macrotech help?
Yes. We can check that your business PCs are patched and up to date, review your backup setup, and advise on basic network hygiene. We don't manage firewalls or VPN appliances directly, but we can point you to what needs attention and help with the PC and data side.
If we do get hit, should we pay the ransom?
The Australian Cyber Security Centre advises against paying ransoms — there's no guarantee of getting your data back, and payment can mark you as a repeat target. Report incidents via ReportCyber and seek professional incident response help.
How does the SonicWall vulnerability specifically relate to this?
The ACSC has warned about a specific, known SonicWall SSL VPN vulnerability (CVE-2024-40766) that ransomware groups including Akira have used to gain initial access to business networks. If your business uses a SonicWall VPN appliance, check it's running current firmware and that passwords were reset after any update.
Macrotech Solutions is an independent computer repair business and is not affiliated with, endorsed by, or acting on behalf of SonicWall, Microsoft, or any device or software manufacturer named above. This article is general information, not professional cyber security or incident response advice — for an active incident, contact a specialist incident response provider and the Australian Cyber Security Centre.