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Expert Penetration Testing Services in Sydney | Lean Security

Penetration Testing
AI Penetration Test
Web Application Penetration Test
Mobile Application Penetration Test
API Penetration Test
IoT Penetration Test
External Network Penetration Test
Strategic Advisory
Threat Modelling
Bespoke Threat Advisory Service
AI Red Teaming
Adversary Simulation (Red & Purple Teaming)
Knowledge Base
Prices
Company
About Us
Why Us
Partners
Blog
Contact Us
November 12, 2025
Lean Security Expert
CISA Alert: LANDFALL Spyware Hits Australian ...

A zero-click vulnerability, CVE-2025-21042, in millions of Samsung devices is being actively exploited to install "LANDFALL," a commercial-grade spyware. This threat, now on CISA's KEV catalog , transforms an executive's personal device into a silent corporate surveillance tool, completely bypassing your MDM and EDR. For Australian organisations with BYOD policies, this is a critical, reportable data breach scenario under the NDB scheme.

CISA Alert: LANDFALL Spyware Hits Australian BYOD Devices
October 25, 2025
Lean Security Expert
Beyond the Patch: Why the Actively Exploited ...

Actively exploited WSUS flaw CVE-2025-59287 (CVSS 9.8) threatens Australian businesses. Patching isn't enough. See why red teaming is essential to validate your security.

Beyond the Patch: Why the Actively Exploited WSUS Vulnerability (CVE-2025-59287) Demands a Red Team Response in Australia
October 12, 2025
Lean Security Expert
Oracle EBS Zero-Day CVE-2025-61882: Australian ...

Critical Oracle EBS zero-day CVE-2025-61882 actively exploited. Australian firms face data theft. Move beyond patching to proactive red teaming & security.

Oracle EBS Zero-Day CVE-2025-61882: Australian Threat
September 27, 2025
Lean Security Expert
ACSC HIGH ALERT: Your CI/CD Pipeline is the New ...

The ACSC has issued a high alert on attacks against Australia's software supply chain. Adversaries are no longer just targeting your live systems; they are infiltrating the "factory" where your software is built. We simulate these advanced, multi-stage attacks to validate your defences against this critical threat.

ACSC HIGH ALERT: Your CI/CD Pipeline is the New Frontline. Are You Prepared for a Supply Chain Attack?
September 15, 2025
Lean Security Expert
ACSC ALERT: Is Your SonicWall VPN an Open Door ...

The ACSC confirms the Akira ransomware group is actively exploiting SonicWall VPNs to breach Australian businesses. Patching is not enough—attackers are bypassing the fix. With Australia's new mandatory reporting laws, this technical vulnerability can quickly become a regulatory and legal disaster.

ACSC ALERT: Is Your SonicWall VPN an Open Door for Akira Ransomware in Australia?
Lean Security Expert
October 5, 2019

Is Your “Secure” Password Policy Actually Secur

Lean Security Expert
October 5, 2019
Is Your “Secure” Password Policy Actually Secur

Is Your “Secure” Password Policy Actually Secure, read on to know.

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Lean Security Expert
October 2, 2019

Me Confused: What’s the Difference Between Vulnerability Assessment and Pen Testing

Lean Security Expert
October 2, 2019
Me Confused: What’s the Difference Between Vulnerability Assessment and Pen Testing

Vulnerability assessment and pen testing are very different from each other, read how:

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Lean Security Expert
September 30, 2019

A Business Owner’s Basic Guide to Pen Testing

Lean Security Expert
September 30, 2019
A Business Owner’s Basic Guide to Pen Testing

Pen testing, short for penetration testing, has never been more important than it is today. Here’s a basic guide for you;

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Lean Security Expert
September 25, 2019
Network Security

Bots, Bots Everywhere: 5 Largest DDoS Attacks in the History of the Internet

Lean Security Expert
September 25, 2019
Network Security
Bots, Bots Everywhere: 5 Largest DDoS Attacks in the History of the Internet

We know how a DDoS attacks can overwhelm a system’s resources and take it down to the ground.  

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Lean Security Expert
August 29, 2019

Introduction to Penetration Testing

Lean Security Expert
August 29, 2019
Introduction to Penetration Testing

Cyber attacks are becoming increasingly common. There, it has become necessary to keep networks secure.

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Lean Security Expert
August 10, 2019

Cloud-Based Mobile Application Testing—What Should You Focus On?

Lean Security Expert
August 10, 2019
Cloud-Based Mobile Application Testing—What Should You Focus On?

Here are some important things to focus while getting your application tested through a cloud-based server.

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Lean Security Expert
August 6, 2019

Web Application Security Testing: Focusing on Certain Areas of Web App

Lean Security Expert
August 6, 2019
Web Application Security Testing: Focusing on Certain Areas of Web App

Here are some important aspects that should be considered before you perform a security test on your web application.

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Lean Security Expert
August 3, 2019

How to Keep Your Website Safe from a DDoS Attack

Lean Security Expert
August 3, 2019
How to Keep Your Website Safe from a DDoS Attack

If you consider your website vulnerable to such attacks, it’s time you look into some preventative measures. Here are a few tips to prevent your website from a DDoS attack.

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Lean Security Expert
July 31, 2019

Mobile App Security Tips to Avoid Cyber Threats

Lean Security Expert
July 31, 2019
Mobile App Security Tips to Avoid Cyber Threats

Take a look at these security tips to avoid cyber threats.

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Lean Security Expert
July 29, 2019

Five Reasons Your Business Needs The Most Secure Data Protection Available

Lean Security Expert
July 29, 2019
Five Reasons Your Business Needs The Most Secure Data Protection Available

5 reasons why your business needs the most secure data protection available.

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Lean Security, 81-83 Campbell Street, Surry Hills, NSW, 2010, Australia+61 (2) 8078 6952info@leansecurity.com.au

About Lean Security

We are a specialist cybersecurity firm based in Sydney, focusing on penetration testing. We partner with organisations across Australia, providing expert-led testing and clear, actionable reports. Our goal is to give you the clarity and confidence needed to secure your digital assets.

     
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