Top 5 Cyber Security Companies in Perth for Businesses 2026

The top cybersecurity companies in Perth for small businesses in 2026 are CyberMark Agency, Diamond Cyber Security, Slipstream, PSQ Group, and Ever Nimble, each suited to a different mix of budget, compliance needs, and monitoring depth. Perth businesses are being targeted at a rate that outpaces what most owners assume: Australian small businesses reported an average cybercrime cost of $56,600 in FY2024–25, up 14% year-on-year, and a Perth-based operational technology firm was still turning up on ransomware leak sites as recently as September 2025.

This guide compares all five on services, pricing, and support, then covers what actually drives cost, which compliance frameworks matter locally, and the threats Perth businesses are facing right now.

Cybersecurity Perth: Quick Comparison

What to Look for in a Cybersecurity Company in Perth

Before comparing names, it helps to know what actually separates a genuinely managed cybersecurity service from a general IT provider that’s bolted antivirus onto its offering. Run any Perth provider through this checklist:

• Genuine 24/7 monitoring, not business-hours coverage with after-hours escalation only
• Compliance framework coverage that includes the Australia Privacy Act 1988, not just generic international standards
• No lock-in contracts, so the provider has to earn your business every month
• Endpoint protection and backup handled together, rather than as separate vendor relationships
• Local or Australian-based support, so you’re not explaining your business hours to an offshore call centre

If you’re not sure where your own gaps sit before you start comparing quotes, a cybersecurity risk assessment is the right starting point; it tells you what to ask providers rather than relying on their sales pitch to define the conversation.

Top 5 Cyber Security Companies in Perth for Businesses

Here’s a closer look at each provider, including who they’re actually built for and where they stand out.

1. CyberMark Agency

CyberMark Agency is a managed cybersecurity service provider built for small businesses across Australia and New Zealand, teams of 1 to 50 staff, rather than a scaled-down enterprise offering. Its stack runs on Bitdefender for endpoint detection and response, paired with Zabbix system monitoring and Backblaze B2-backed data storage encrypted with AES-256 and TLS. Baseline protection is live within 48 hours, with full deployment in 5 to 7 business days. Plans start at $25 NZD per endpoint per month, rising to $30 NZD with managed firewall and an annual compliance framework assessment, with 24/7 monitoring available as a $35 NZD add-on. Compliance support covers ISO 27001, SOC 2, HIPAA, GDPR, PCI DSS, and the Australia Privacy Act 1988, and every plan runs month-to-month with no lock-in. Staff-side risk is covered through managed security awareness training, pairing phishing simulations with the endpoint layer above.

Best for: Perth small businesses that want one accountable provider for endpoint protection, monitoring, and compliance reporting instead of stitching together separate vendors.

2. Diamond Cyber Security

Diamond Cyber Security is a Perth-based firm founded by former Australian Defence Force Special Forces personnel. Its positioning centres on an offensive-security lens, applying defence-grade testing discipline to private-sector penetration testing and security governance, run by a small, specialist team rather than a broad managed-services shop.

Best for: Perth businesses that specifically want offensive-security-informed testing rather than a generic vulnerability scan.

3. Slipstream

Slipstream is a Perth-headquartered managed cybersecurity provider running its own Cyber Security Operations Centre (CSOC) in Western Australia, staffed by professionals with backgrounds in cyber operations, anti-fraud, and digital forensics. Founded in 2017, it centres its offering on client resilience and data-driven threat intelligence.

Best for: Businesses that specifically want a locally staffed, Perth-based monitoring team rather than an interstate or offshore SOC.

4. PSQ Group

PSQ Group is a Perth IT services company holding both ISO 27001 (information security) and ISO 9001 (quality) certification, serving Perth businesses for more than a decade as a broader managed IT provider with security built in.

Best for: Businesses that want day-to-day IT support and cybersecurity handled by the same certified provider.

5. Ever Nimble

Ever Nimble is a Perth-headquartered managed security service provider (MSSP) with an international team footprint spanning the UK, Canada, and other Australian cities, recognised as a certified “Great Place to Work,” combining IT support with cybersecurity advisory.

Best for: Businesses that want an MSSP with international bench strength behind a Perth-based account team.

Essential Eight Compliance for Perth Businesses

For Western Australian businesses, the Australian Signals Directorate’s (ASD) Essential Eight is the baseline most cybersecurity providers build their service around: application control, patching, Microsoft Office macro settings, user application hardening, restricted admin privileges, multi-factor authentication, and regular backups, scored against maturity levels ML0 to ML3. It isn’t legally mandatory for private businesses, but it’s increasingly expected by cyber insurers, larger clients, and government-adjacent tenders.

Worth knowing: on 24 June 2026, ASD confirmed the Essential Eight will be retired and replaced by a new “Essentials” framework over a staged, roughly 24-month transition. It remains current guidance today, and insurers and tenders are still assessing against it. For businesses handling customer data, this sits alongside obligations under the Australian Privacy Act 1988, where compliance reporting mapped to a specific framework beats a generic security review. For a broader look at what a full managed offering typically covers, the same fundamentals apply across cyber security services in Australia, not just in Perth.

How Much Does Cybersecurity Cost for a Perth Small Business?

There’s no single Perth-specific rate card; cost depends on endpoint count, whether monitoring runs 24/7 or business-hours only, and how many compliance frameworks need reporting. As a reference point, CyberMark’s plans start at $25 NZD per endpoint per month, rising to $30 NZD with managed firewall and an annual framework assessment, with 24/7 monitoring as a $35 NZD add-on and compliance reporting from $500 per framework. The biggest cost driver is usually whether you’re paying for software alone or a human team watching it around the clock, the same distinction that separates a managed SIEM vs managed SOC. 

Cyber Threats Facing Perth Businesses Right Now

ASD’s Annual Cyber Threat Report 2024–25 makes the case plainly: ASD received over 84,700 cybercrime reports nationally, one every six minutes, and phishing accounted for 38% of reported incidents, still the most common way attackers get in. Small businesses reported an average cost of $56,600 per incident, up 14% on the year before.

Perth isn’t insulated from this. Intellect Systems, a Perth-based operational technology and engineering firm, appeared on the Akira ransomware group’s leak site in September 2025, a reminder that WA’s mining, engineering, and logistics-adjacent businesses are active targets. If your business is hit, having encrypted secure data storage with tested restore points matters more than most owners realise, and understanding mandatory ransomware reporting obligations before an incident happens beats working them out during one.

Cybersecurity Perth in the Wider Australian Market

The criteria that matter for a Perth business, compliance coverage, genuine 24/7 monitoring, and no lock-in pricing, are the same ones that apply nationally. If you’re weighing options beyond WA, the same evaluation approach carries over whether you’re comparing cyber security companies in Sydney, cyber security companies in Melbourne, or scanning the broader field of top cyber security companies in Australia. What changes between cities is usually the roster of local specialists, not the underlying checklist.

Frequently Asked Questions

What is the average cost of cyber security services in Perth? 

Cost depends on endpoint count, monitoring coverage, and how many compliance frameworks apply, so there’s no single Perth-wide figure. CyberMark’s plans start at $25 NZD per endpoint per month, a useful reference point while you get quotes scoped to your own environment.

How do I choose a cybersecurity company in Perth for my business?

Match the provider to your gap: fully managed protection for hands-off coverage, offensive-security testing for penetration testing, a locally staffed SOC for real-time monitoring, or bundled IT-plus-security if you want one vendor for everything. 

Does my Perth business need a locally based cybersecurity provider, or is remote fine?

It depends on what you’re prioritising. A Perth-based team offers same-timezone support and local threat context, but a well-run remote provider with 24/7 monitoring and Australian Privacy Act compliance can serve a small business just as effectively. 

Is the Essential Eight framework mandatory for Perth businesses?

No, the Essential Eight isn’t legally mandatory for private businesses, but it’s widely expected by cyber insurers, larger clients, and government-adjacent tenders, and it’s set to be replaced by ASD’s new “Essentials” framework over a staged transition. 

How long does it take to set up managed cybersecurity for a small business?

Timelines vary by provider, but baseline protection can be live within 48 hours, with full deployment typically taking 5 to 7 business days. 

Choosing the Right Cybersecurity Partner in Perth

There’s no single “best” cybersecurity company in Perth, only the one that matches your staff count, budget, and compliance obligations under the Australia Privacy Act 1988. A fully managed, no-lock-in service suits most small businesses that want ongoing protection without hiring an internal security team, while a specific certification, offensive testing, or locally staffed SOC need may point you toward one of the specialists above instead.

If you want a clear, no-obligation starting point before you commit to any provider on this list, book a free security assessment with CyberMark. It takes 15–30 minutes, maps your current exposure against the criteria, and gives you a concrete next step.