Ransomware attacks on Perth businesses are increasing. The average cost of a ransomware incident for an SMB is $46,000 — including downtime, recovery costs and reputational impact. COREWEST implements layered ransomware protection that reduces the likelihood of an attack succeeding and ensures recovery is possible if one does.
Get Free Cyber Risk Snapshot →Most ransomware arrives via phishing email. Properly configured email security stops it before it reaches staff.
Microsoft Defender detects ransomware behaviour in real time and automatically isolates affected devices.
Ransomware-proof backup means encrypted files can always be recovered to a clean point in time.
Properly enforced MFA prevents credential theft from giving attackers network access.
Staff trained to recognise phishing — the primary ransomware delivery mechanism.
Book a Cyber Risk Snapshot and get a plain-English report on your current cyber exposure. 30 minutes. No obligation.
Get Free Cyber Risk Snapshot →Ransomware rarely arrives as a dramatic break-in. For most Perth firms with 5 to 50 staff, it starts with one ordinary email. A staff member at an accounting practice clicks a link that looks like an ATO portal login. A site supervisor at a construction company opens an invoice attachment from what reads like a known supplier. The credentials get captured, an attacker logs in quietly during the work day, and for days or weeks nothing looks wrong. By the time files start encrypting, the intruder has already mapped your shared drives, found your backups, and chosen the worst possible moment to strike.
The pattern is consistent across WA: phishing leads to a stolen login, the stolen login leads to deeper access, and the encryption is the last step, not the first. Around 94% of attacks begin with phishing, which is why a single weak point in email or identity is usually how a whole business goes down. The attackers are not targeting you personally. They run automated campaigns against thousands of Australian inboxes and act on whichever ones respond.
The damage is not just locked files. It is the week your business stops. Picture a Perth allied health clinic on a Monday morning: practice management software will not open, patient records are inaccessible, Medicare claiming is frozen, and reception is turning people away at the door. Or an engineering firm mid-tender, locked out of project files with a submission due Friday and no clean copy to work from. The ransom note is the smallest part. The real cost is the standstill, the client trust you spend rebuilding, and the awkward calls explaining why their data was involved.
For regulated industries the fallout runs deeper. A legal practice faces client privilege and trust account exposure. A medical or NDIS provider faces Privacy Act obligations and mandatory breach reporting. An AFSL holder finds the board treating it as a governance failure. Many businesses also discover their cyber insurer asks pointed questions about controls that were never in place, and a claim that should have been straightforward becomes a fight. The businesses that recover fastest are the ones that had clean, tested backups and could prove the attacker never reached them.
We treat ransomware as a chain you break at every link, using the Microsoft tools your business already pays for inside Microsoft 365. Each layer does a specific job:
None of this is bolt-on software you buy separately. It is configuring and hardening what Microsoft already provides, then keeping it tuned, so you stop paying for protection you are not actually using.
Protection is not a one-time setup. Week to week, we keep devices patched and reporting healthy, review the alerts Defender raises and act on the ones that matter, confirm new staff are onboarded with the right access and leavers are removed promptly, and verify that backups are not just running but actually restorable. Once a month you get a plain-English report showing what was blocked, what changed, and where you stand, written for an owner rather than an IT manager.
Good looks like this: a phishing email that reaches your inbox gets caught before anyone clicks. A stolen password gets stopped at the login. A device that starts behaving strangely gets isolated automatically. And if the worst happens, you restore from a backup you have already tested and keep working, instead of deciding whether to pay strangers. As a Perth team with no lock-in and month-to-month support, we stay accountable for that result, not just for the install.
If you are not certain where your business sits today, the fastest way to find out is a Free Cyber Risk Snapshot. In 30 minutes we show you what is actually exposed, in plain English, with no obligation. Book it at calendly.com/corewest/30min.