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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
January 11, 2026
Lean Security Expert
The ToolShell Crisis: Why Your SharePoint ...

The Australian Cyber Security Centre has issued urgent warnings about actively exploited vulnerabilities in Microsoft SharePoint Server (CVE-2025-53770) that enable unauthenticated remote code execution. With Chinese state-aligned actors and ransomware groups already compromising Australian organisations, this threat represents an immediate and severe risk to business-critical data and infrastructure.

The ToolShell Crisis: Why Your SharePoint Server Is a Ticking Time Bomb
December 27, 2025
Lean Security Expert
Why Long-Lived Cloud Credentials Are Your ...

Across AWS, Google Cloud, and Microsoft Azure environments in Australia and globally, 59% of IAM users maintain access keys that have never expired—credentials that have been active for more than one year. These long-lived credentials represent a silent but catastrophic vulnerability in your cloud infrastructure. This blog explores why long-lived credentials have become the primary attack vector for identity-based breaches, how red teams exploit them during penetration tests, and what you must do today to eliminate this ticking time bomb.

Why Long-Lived Cloud Credentials Are Your Biggest Identity Risk in 2025
December 21, 2025
Lean Security Expert
Fortinet "Ghost Logins": How Authentication ...

Critical authentication bypass vulnerabilities in Fortinet FortiGate and related products (CVE-2025-59718 and CVE-2025-59719) are now under active attack, allowing "ghost" SSO logins that completely sidestep normal controls and logs. For Australian organisations, this is more than a VPN or firewall problem – it is a board-level exposure that directly tests whether your external penetration testing, internal penetration testing, and red team assessment services are capable of simulating SSO abuse, identity takeovers, and lateral movement across hybrid networks.

Fortinet "Ghost Logins": How Authentication Bypass Attacks Expose Gaps in Your Penetration Testing Strategy
December 6, 2025
Lean Security Expert
React2Shell: A CISO’s Guide to CVE-2025-55182

A new security flaw called React2Shell (CVE-2025-55182) puts Australian businesses at extreme risk. It has a severity score of CVSS 10.0, which is the highest possible rating. This flaw lets hackers take full control of your servers without needing a password. It affects the popular tools React and Next.js.

React2Shell: A CISO’s Guide to CVE-2025-55182
November 26, 2025
Lean Security Expert
SessionReaper & BFCM: Why Penetration ...

A critical vulnerability in Adobe Commerce and Magento (CVE-2025-54236), dubbed "SessionReaper," is being ruthlessly exploited by threat actors using AI-driven tools to automate attacks at machine speed. With the Australian holiday trading season in full swing, this unauthenticated remote code execution (RCE) flaw poses an immediate existential threat to retail and B2B organizations. This alert outlines the mechanics of the attack, the role of AI in its weaponization, and the urgent defensive actions required to prevent a catastrophic data breach.

SessionReaper & BFCM: Why Penetration Testing Services Are Critical (CVE-2025-54236)
Lean Security Expert
February 4, 2020

5 Expert Tips for Social Media Security to Mitigate Risks

Lean Security Expert
February 4, 2020
5 Expert Tips for Social Media Security to Mitigate Risks

If you run a business and want to tighten social media security, follow these expert tips.

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Lean Security Expert
January 2, 2020

Cybersecurity for Small Businesses in Australia

Lean Security Expert
January 2, 2020
Cybersecurity for Small Businesses in Australia

In order to protect your business, you need to know what cybercriminals are looking for, how they attack your businesses, and devise a strategy to protect your business.

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Lean Security Expert
December 27, 2019

4 Ways Healthcare Application Security can be Improved

Lean Security Expert
December 27, 2019
4 Ways Healthcare Application Security can be Improved

Our experts at Lean Security have suggested a few ways healthcare applications can be improved.  

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Lean Security Expert
December 24, 2019

Mobile App Penetration Testing- Frequently Asked Questions

Lean Security Expert
December 24, 2019
Mobile App Penetration Testing- Frequently Asked Questions

Thinking of running a mobile app penetration test but still have questions? Our experts have answered some FAQs below.

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Lean Security Expert
December 5, 2019

How Your Business Can Benefit from a Penetration Testing Provider

Lean Security Expert
December 5, 2019
How Your Business Can Benefit from a Penetration Testing Provider

A penetration test may also evaluate an organisation’s security policy compliance, its employees’ security awareness, and the organisation’s ability to identify and respond to security threats and breaches.

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Lean Security Expert
December 3, 2019

What Hackers Look for in a Mobile App

Lean Security Expert
December 3, 2019
What Hackers Look for in a Mobile App

Here are some vulnerabilities hackers look to exploit in mobile apps.

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Lean Security Expert
November 30, 2019

5 Reasons Why Cloud-Based Security is Right for Your Business

Lean Security Expert
November 30, 2019
5 Reasons Why Cloud-Based Security is Right for Your Business

Here are five reasons why your business could do with cloud-based security.

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Lean Security Expert
November 27, 2019

3 Ways You Can Stay Secure on MMO Games Online

Lean Security Expert
November 27, 2019
3 Ways You Can Stay Secure on MMO Games Online

As MMOGs become more and more popular, the need for tighter security increases. Here’s a few things you can do to avoid falling prey to online game fraud.

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Lean Security Expert
November 25, 2019

5 Most Common Types of Application Attacks

Lean Security Expert
November 25, 2019
5 Most Common Types of Application Attacks

Here are 5 common types of application attacks.

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Lean Security Expert
November 23, 2019

A Beginner’s Guide to External Penetration Testing

Lean Security Expert
November 23, 2019
A Beginner’s Guide to External Penetration Testing

Here’s a useful beginner’s guide to external penetration testing.

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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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