Cybersecurity Testing.
Real Partnership.
Clear Results.
We are a Sydney-based firm of certified experts helping organisations across Australia find, understand, and fix the security vulnerabilities that matter.
Clarity in a Complex Digital World
Your business runs on technology. Your applications, APIs, and cloud infrastructure are essential for innovation and connecting with your customers. They are your competitive advantage.
But this complexity also creates risk. Every new feature and third-party integration can introduce hidden vulnerabilities. If found by an attacker, these weaknesses can lead to data breaches, financial loss, and significant damage to your hard-earned reputation.
This is where we help. Lean Security provides the expert, human-led analysis needed to find these critical vulnerabilities before they are exploited. We don't offer vague promises or sell fear. We provide clarity.
Our role is to partner with you, testing your systems with the same rigour as a determined attacker. We then translate our findings into a clear, actionable plan, allowing you to focus on your business, confident that your security is being managed by trusted specialists.
Our Mission
Finding Your Security Gaps
Our job is simple: to find the security weaknesses in your technology before criminals do. We're not just running automated tools; we're a team of experts who manually search for problems. We then give you a clear report showing you exactly where the issues are and how you can fix them.
Our Services
Penetration Testing
Based in Sydney, we help businesses across Australia and worldwide. We have a straightforward process for testing the most important parts of your technology, including:
Websites and Web Applications
Company Networks (Internal and External)
Mobile Apps (iOS & Android)
Cloud Setups (AWS, Azure, GCP)
Our Company
Your Security Partner
We are a team of certified and experienced security professionals. We believe our job is to be your partner. We don’t just send you a complex report and walk away. We work with your team, explain our findings in plain English, and give you practical advice to help you fix the problems for good.
Our Philosophy
Think Like an Attacker. Act Like a Partner.
To find security holes, we have to think and act like real attackers. We use their methods to test your defences in a realistic way. But we are always your partners. Our goal is to share our knowledge and work together with you to make your systems stronger and safer. We're open, honest, and here to help.
Our Security Services
Penetration Testing
We test your systems, websites, and apps by simulating a real cyber-attack. This hands-on testing finds security holes that automated tools often miss, giving you a true picture of your security.
Source code security assessment
Your application's code is its foundation. We manually review your source code line by line to find hidden vulnerabilities, logical flaws, and security issues before they can be exploited by attackers.
Threat Modelling
Before you write a line of code, we help you think like an attacker. We work with your development team to map out potential threats to a new system and plan its defences from the very start.
AI Pen Testing and Red Teaming
Go beyond standard tests. Red Teaming is a full-scale attack simulation against your organisation to test your people, processes, and technology. We also specialise in testing AI systems, finding unique vulnerabilities in machine learning models.
IoT Pen Testing
From smart office devices to industrial sensors, connected devices are a common target. We test your "Internet of Things" hardware, firmware, and communication methods to find weaknesses before they're used against you.
API Penetration Testing
APIs are the backbone of modern applications, handling all the communication. We test these critical connections to find security flaws that could lead to data breaches or allow attackers to take control of your services.
Our Approach: A Clear and Collaborative Process
We believe a security test should be a clear, predictable, and collaborative experience. We don't rely on black-box "magic" or fear-based selling. Our process is designed to give you complete visibility from start to finish, working alongside your team to strengthen your security.
Here’s how we work with you:
1. We Plan Together Before any testing begins, we meet with you to define the scope, goals, and rules of engagement. We work to understand your technology and business needs, ensuring our tests are safe, relevant, and effective.
2. We Find the Vulnerabilities Our certified experts then begin the test, using the same techniques as real-world attackers. We combine sophisticated tools with manual, creative analysis to uncover the critical flaws that automated scanners always miss.
3. We Provide a Clear Report You receive a straightforward report, free of jargon. Each finding is explained in plain English, rated by risk, and comes with clear, step-by-step guidance on how to fix it.
4. We Help You Implement Fixes Our work isn't finished when the report is delivered. We schedule a debriefing call to walk your team through the findings, answer questions, and help you prioritise remediation. We are your partners in security.
Why Partner With Us?
Choosing a security partner is a matter of trust. Our entire approach is built on providing real-world expertise, clear communication, and a genuine commitment to helping you improve your organisation's security posture. We focus on what matters: delivering real, measurable value.
Expert-Led Testing, Not Just Automated Scans Our team consists of certified penetration testers who think creatively, just like real attackers. We find the complex business-logic flaws and chained vulnerabilities that automated tools can't, giving you a true assessment of your risk.
Reports You Can Actually Use We deliver clear, concise reports written in plain English. Each vulnerability is explained with its potential business impact and comes with practical, step-by-step guidance for your technical teams to prioritise and implement fixes.
A Partnership, Not Just a Project Our engagement doesn't end when we deliver the report. We provide follow-up support, debrief your team, and make ourselves available to answer questions. We succeed when you succeed in strengthening your defences.
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