A penetration test is a controlled, authorised simulated attack on your systems. It shows where your defences would fail before a real attacker finds out, and gives you a clear, prioritised list of what to fix. Sydney Technology Solutions scopes, manages and follows through on penetration testing for Sydney businesses, and because we’re also an IT provider, we can fix what the test finds.

Types of penetration testing
External network testing
Tests your internet-facing systems, such as firewalls, remote access, VPNs and public servers, the way an outside attacker would.
Web application testing
Tests your websites, client portals and web applications for weaknesses like injection, broken authentication and exposed data.
Microsoft 365 and cloud testing
Reviews your Microsoft 365 and cloud setup for identity attack paths, risky configurations and gaps an attacker could use.
Vulnerability assessments
Regular scanning of your systems for known vulnerabilities, a lighter-weight check between full penetration tests.
How we deliver penetration testing
We use a mix of our own team and accredited specialist partners. Our team carries out assessments where we have the right expertise, and we bring in specialist testers for deeper or more specialised tests, with STS managing the whole engagement and staying your single point of contact.
Our process
1. Scope
We agree what will be tested, how and when, and the rules of engagement, so testing is safe and authorised.
2. Test
Systems are tested using the techniques real attackers use, with care taken to avoid disrupting your business.
3. Report
You receive a clear report with each finding rated by risk, plus a plain-English summary for management.
4. Fix
Our team helps you fix the findings, starting with the highest risks.
5. Verify
We confirm the fixes have worked and advise when to test again.
What you get
- A plain-English executive summary of your overall risk
- Detailed technical findings, each rated by severity
- Practical remediation steps, prioritised by risk and effort
- Help fixing the issues, from the same team that knows your environment
- Evidence you can give insurers, clients and auditors who ask about security testing
Why test with STS?
- We don’t just hand over a report. Many testers leave you with a long list of problems. We help you fix them.
- Right-sized testing. We’ll recommend the type and depth of testing that suits your risk and budget, and tell you honestly when a lighter vulnerability assessment is enough.
- Part of a bigger picture. Test results feed into your Essential Eight roadmap and wider cybersecurity plan.
When should you get a penetration test?
- Your insurer, a client or a tender asks for evidence of security testing
- You’ve launched a new website, portal or application
- You’ve made significant changes to your network, remote access or Microsoft 365
- You handle sensitive client or personal information
- It’s been more than a year since your last test
Why choose STS for penetration testing
Penetration testing is only useful if the findings get fixed. We scope tests around your real risks, explain the results in plain English and help you remediate, then retest to confirm. Our penetration testing approach supports the Australian Cyber Security Centre’s Essential Eight and the evidence insurers increasingly ask for.
What our clients say
“Their expertise spans across network security, hardware provisioning, cloud solutions, and proactive cyber security management and training.”
Matts D., Google review
STS is rated 4.8★ on Google. Read more client reviews.
Frequently asked questions
What’s the difference between a vulnerability scan and a penetration test?
A vulnerability scan automatically looks for known weaknesses. A penetration test goes further: testers actively try to exploit weaknesses, chain them together and show what an attacker could really achieve.
Will testing disrupt our business?
Testing is planned carefully and scheduled to minimise disruption. We agree the scope and timing with you before anything starts.
How often should we test?
At least annually for most businesses, and after any significant change to your systems or website.
How much does a penetration test cost?
It depends on the scope: what’s being tested and how deeply. Once we’ve agreed the scope, we’ll give you clear pricing.
Find your weak spots before attackers do
Call (02) 8212 4722 or send us a message to talk about penetration testing.
55 Park Road,