Cyber Security Cost in Perth (2026)
Perth businesses pay $2,000–$10,000 per assessment for a cyber security assessment or audit on our figures, usually a gap assessment against the Australian Signals Directorate's Essential Eight. A penetration test of an external footprint or a single web application costs $5,000–$15,000 per test, and an authenticated or internal network test $16,000–$45,000 per test. Ongoing protection is priced per seat: managed IT with security at $120–$300 per user per month, and endpoint detection and response at $5–$15 per device per month. Every figure is ex GST.
Comparing cities, or after the Australia-wide picture? See the national guide: How much does cyber security cost in Australia?
Detailed Pricing — Cyber Security Cost in Perth 2026
| Tier | Typical cost (ex GST) | Basis |
|---|---|---|
| Cyber security assessment or audit (Essential Eight gap assessment) | $2,000–$10,000 per assessment | Per assessment |
| Penetration test, external footprint or single web application | $5,000–$15,000 per test | Per test |
| Penetration test, authenticated or internal network | $16,000–$45,000 per test | Per test |
| Managed IT with security, per user | $120–$300 per user per month | Per user, per month |
| Endpoint detection and response, per device | $5–$15 per device per month | Per device, per month |
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Get Perth quotes →What Moves the Cyber Security Cost in Perth
- Scope of the assessment. A gap assessment against ASD's Essential Eight on a single Microsoft 365 tenant sits at the low end of $2,000–$10,000 per assessment; one that covers several sites, servers and line-of-business systems sits at the top. Ask which of the eight strategies the report scores and to what maturity level.
- Test type. An external or single web application test at $5,000–$15,000 per test is scoped by the number of hosts and pages in play. An authenticated or internal network test at $16,000–$45,000 per test adds days of manual work, privileged credentials and a longer report.
- Users and devices. Managed IT with security is billed at $120–$300 per user per month and endpoint detection and response at $5–$15 per device per month, so the headcount and device count set the monthly figure before any work starts. Servers are often counted as devices; ask.
- Breach obligations. The OAIC is plain: if the Privacy Act 1988 covers your organisation, you must notify affected individuals and the OAIC when a data breach involving personal information is likely to result in serious harm. A Perth provider prices incident response readiness into a managed plan, so ask what the plan does in the first 24 hours of a suspected breach.
- Remediation after the report. A provider quotes the fixes an assessment or test uncovers separately, so ask for the remediation hourly rate or a fixed price before the work starts. ASD's Annual Cyber Threat Report 2024-25 recorded more than 84,700 cybercrime reports and a 14 per cent rise in the average self-reported cost of cybercrime for a small business, which is why the report is the start of the spend, not the end of it.
Cyber Security Cost in Perth: One-off Assessment or Managed Plan?
Perth cyber security providers price the same protection two ways. A one-off engagement, the Essential Eight gap assessment at $2,000–$10,000 per assessment or a penetration test at $5,000–$15,000 per test, tells a business where it stands on a given day and ends with a report. A managed plan at $120–$300 per user per month, with endpoint detection and response at $5–$15 per device per month, keeps patching, multi-factor authentication, monitoring and backups running every month.
In money terms, set a year of the two managed rows beside one assessment plus the remediation it produces; the managed plan starts to pay once someone has to keep the Essential Eight controls current anyway. Most Perth businesses end up with both: an assessment first, then a managed plan sized to the gaps it found. Ask the provider to state the user count, the device count and the Essential Eight maturity level the plan targets.
How to Keep the Cyber Security Cost Sane in Perth
This guide is general information, not advice. Figures are typical ranges compiled from published Australian sources in 2026 and are not a quote; confirm fees with the provider before engaging them.
Cyber Security Cost in Perth by Service Package
Lay the rows out together. A Perth business with a single Microsoft 365 tenant and no servers suits an Essential Eight gap assessment at the low end of $2,000–$10,000 per assessment; a business with a customer-facing web application adds an external penetration test at $5,000–$15,000 per test; and one with an internal network, remote access and privileged accounts moves to an authenticated or internal test at $16,000–$45,000 per test.
Ongoing protection is priced per seat. Managed IT with security at $120–$300 per user per month and endpoint detection and response at $5–$15 per device per month scale with headcount and device count, so a Perth quote should name both numbers. Before signing, ask which Essential Eight maturity level the plan targets and what the remediation of findings costs on top.
Cyber Security Cost in Perth: What the Quote Should Include
In Perth a cyber security quote can describe a two-day gap assessment or a month of monitoring, so the quote has to say which. Ask a Perth provider for each line in writing, with the users, devices and systems counted.
- The assessment named against its row, $2,000–$10,000 per assessment, with the systems in scope and the Essential Eight maturity level it scores against
- A penetration test with its type stated: external or single web application at $5,000–$15,000 per test, or authenticated and internal at $16,000–$45,000 per test, with the hosts and applications listed
- The managed plan at $120–$300 per user per month, with the user count it is priced on and what the help desk, patching and monitoring cover
- Endpoint detection and response at $5–$15 per device per month, with the device count and whether servers are included
- Remediation of findings, quoted as an hourly rate or a fixed price, listed apart from the assessment
- Multi-factor authentication, backups and backup testing named inside the plan, not left as extras
- Incident response: who is called, the response time, and the steps for a notifiable data breach under the Privacy Act 1988
- The term, the notice to end, who owns the licences and logs when the plan ends, and GST on top