Lean. Fast. Secure.

Security services for fast-moving SaaS, fintech, and AI teams.

Find and fix vulnerabilities without slowing down development.

LEAN FUNDAMENTALS

Empowering Businesses Through Lean Security

Security is often slow, expensive, and complex—but it doesn’t have to be. Lean Security is a streamlined approach that makes security FASTER, more efficient, and more effective by emphasizing speed, automation, and risk-based decision-making while empowering teams to take ownership of security.

At its core, Lean Security is built on two key components:

  • Lean Security Process (The FASTER Framework) – A strategic foundation for smarter security.
  • Lean Security Feedback Loop (3F's - Find-Fix-Flow) – An operational feedback loop for continuous improvement.

Together, they create a powerful, scalable, and adaptive approach to security that fits seamlessly into any organization.

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PENETRATION TESTING

Web Application Penetration Testing

Find real vulnerabilities before attackers do.

We simulate real-world attacks to uncover critical flaws in your web app then help your team fix them fast.

No bloated reports. No checkbox testing. Just high-impact findings and clear remediation guidance.

  • Authentication & authz issues
  • Business logic flaws & API abuse
  • LLM & AI-specific risks (optional)
  • Manual testing + modern tooling
  • Remediation help included

Built for fast-moving SaaS, fintech, and AI teams. Based in Japan. Trusted globally.

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SECURITY ASSESSMENTS

SaaS Security Assessments

Tailored testing for fast-moving cloud platforms.

We go beyond surface-level bugs to find complex logic flaws, multi-tenant risks, and cloud misconfigurations specific to SaaS architectures.

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THREAT MODELING

Threat Modeling

Get ahead of attackers—before code is written.

We help your team build a live, accurate picture of your system using AI-assisted threat modeling.

Map out STRIDE risks, misconfigurations, and insecure design before they reach production.

 

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THREAT MODELING

Secure Development Services

Security built into your development flow.

From secure code reviews and design input to CI/CD integration and automation, we embed security into your dev process—not bolt it on later.

SECURE YOUR DEV PROCESS
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DEMO

Sample Pentest Report

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Founders, Business Leaders & Owners
Need Security That Works

“Engaging Lean Security as a 3rd party allowed us to independently review and fix security flaws in the design of our product that had been overlooked by our developers. As a result, we have a more robust product that allows us to confidently state that it is the most secure product in our marketspace. With solid Fintech experience, Lean Security understands our client base and has geared their solution accordingly”

MANAGING DIRECTOR, AHEAD GROUP Edmund Gehringer IV

“Successfully launched our initial product for hospitals and healthcare facilities in Japan. It's always important to prioritize security when building products, especially in sensitive industries like healthcare. Our team was able to leverage the expertise of Lean Security, who provided us with valuable security recommendations to implement security standards and achieve our goals.”

FOUNDER & CEO, ALY Kimitaka Nakazawa

“With the help of Lean Security, we've been able to launch a best-in-class payment solution on top of Google Cloud's infrastructure, meeting strict industry and regulatory requirements on security and stability, and do so within weeks rather than months.”

FORMER CEO, SMARTPAY Pieterjan Vandaele

Trusted By

LEARN

Align security testing with business priorities

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COURSE

Get our free email course to get the most out of your next penetration test

Our free course will help you minimize time and cost while maximizing the ROI on your next penetration test.

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Free Penetration Testing Course
Ahead Group
Learn how Lean Security can secure your next product launch.
SITUATION

Ahead Group needed to launch a new SaaS product tailored for the Fintech market. With stringent security requirements driven by regulations and high customer expectations, ensuring a secure foundation was critical.

SOLUTION

Lean Security conducted a comprehensive security review during the product’s development phase, identifying and addressing potential vulnerabilities early. This was followed by a full-scope penetration test to validate the security of the system and protect customer data.

IMPACT

The engagement significantly reduced risks and gave Ahead Group the confidence to launch their product securely, meeting regulatory demands and customer trust requirements.

Smartpay
Ready to fast-track your secure product launch?
SITUATION

Smartpay, a leading payment platform, was preparing to launch a cutting-edge payment solution built on Google Cloud. To succeed in the competitive Fintech space, they needed to meet stringent security and regulatory requirements while ensuring their infrastructure’s stability. Time was a critical factor, as their goal was to deliver a secure and compliant product within weeks rather than months.

SITUATION

Lean Security partnered with Smartpay to provide a streamlined security review tailored to the Fintech industry. This included validating their Google Cloud architecture, performing a comprehensive penetration test, and ensuring compliance with strict industry regulations. Our rapid and thorough approach enabled Smartpay to meet their accelerated timeline without compromising on security.

SITUATION

Smartpay successfully launched its best-in-class payment solution on schedule, meeting industry and regulatory requirements for security and stability. The collaboration with Lean Security not only reduced time-to-market but also enhanced customer confidence in the platform’s reliability and safety.

Aly
Partner with Lean Security to secure your next healthcare innovation.
SITUATION

Aly.ai was preparing to launch its initial AI-driven product designed for hospitals and healthcare facilities in Japan. Operating in the highly sensitive healthcare industry, ensuring the security of patient data and meeting industry standards were top priorities. The team needed expert guidance to implement robust security measures and achieve compliance with healthcare regulations.

SITUATION

Lean Security worked closely with Aly.ai to deliver expert security recommendations tailored to the unique challenges of healthcare technology. This included implementing industry-standard security frameworks, performing targeted security assessments, and providing actionable insights to align the product with both regulatory requirements and best practices.

SITUATION

Aly.ai successfully launched its first product, meeting the security standards expected in the healthcare industry. The collaboration with Lean Security ensured the platform was equipped to handle sensitive data securely, fostering trust with hospitals and healthcare facilities across Japan.

PLANS

Scale your marketing metrics

Basic

$30/mo

Flat fee for up to 200 users

Set the foundation with all your team needs for basic data integrations.

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Pro

$85/mo

Flat fee for up to 200 users

Set the foundation with all your team needs for basic data integrations.

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Enterprise

Custom

Get in touch for a custom quote

Set the foundation with all your team needs for basic data integrations.

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