GMO Flatt Security Inc.

GMO Flatt Security Inc.

Speciality: Comprehensive Software Penetration Testing

Shibuya, Japan 35 employees Publishes CVEs
[01] About

Cybersecurity startup specializing in security assessments and penetration testing; 26 employees with 16.7% YoY growth since 2017; based in Shibuya, Tokyo, Japan; ranked #828,465 globally and #131,936 in country, offering expert security services and tools.

GMO Flatt Security, based in Tokyo, offers expert security assessments and penetration testing for software. Our seasoned professionals deliver proven, top-tier services. We also provide tools to help you internalize cutting edge, state of the art security practices.
[02] Services
Security Assessments
Penetration Testing
Manual Vulnerability Diagnosis
Automatic Continuous Vulnerability Diagnosis
Secure Development Consulting
Secure Coding Training
[03] Certifications
OSCP

Origin of the OSCP


The Offensive Security Certified Professional (OSCP) certification was created by Offensive Security, a company founded by Mati Aharoni and other security professionals in 2007. The certification was developed to address the gap between theoretical knowledge and practical penetration testing skills in the cybersecurity industry. Offensive Security designed the OSCP to be a hands-on, performance-based certification that requires candidates to demonstrate actual hacking skills in a controlled lab environment rather than simply answering multiple-choice questions.


Industry Value and Importance


The OSCP is highly valued in the cybersecurity industry because it proves that holders possess real-world penetration testing abilities. Unlike traditional certifications, the OSCP's 24-hour practical exam requires candidates to successfully compromise multiple machines in a simulated network environment and document their findings professionally. This hands-on approach has made it a gold standard for entry to intermediate-level penetration testers, and it's frequently requested or required by employers hiring for offensive security roles. The certification's difficulty and practical nature have earned it significant respect among security professionals and hiring managers.

OSWP

OSWP Cybersecurity Certification


Origin


The Offensive Security Wireless Professional (OSWP) certification was created by Offensive Security, the same company behind the renowned OSCP certification. Launched in 2008, the OSWP was developed to address the growing need for professionals skilled in wireless network security assessment. Offensive Security created this certification to provide hands-on, practical training in identifying and exploiting vulnerabilities in 802.11 wireless networks, maintaining their philosophy of "Try Harder" and emphasizing real-world penetration testing skills over theoretical knowledge.


Industry Value


The OSWP is valued in the cybersecurity industry because it demonstrates proven practical ability in wireless network penetration testing through a hands-on exam format. Unlike multiple-choice certifications, holders must successfully crack WEP and WPA/WPA2 encryption and document their methodology in a professional penetration testing report. This certification is particularly respected because it validates actual technical competency rather than memorization, making OSWP holders attractive candidates for penetration testing roles, security consulting positions, and network security positions where wireless infrastructure assessment is critical.

OSWA
OSWE

OSWE Certification Overview


Origin


The Offensive Security Web Expert (OSWE) certification was created by Offensive Security, the cybersecurity training company behind Kali Linux and the renowned OSCP certification. Introduced in 2018, the OSWE was developed to address the growing need for professionals skilled in advanced web application security and source code review. The certification emerged from Offensive Security's commitment to hands-on, practical training that goes beyond surface-level vulnerability scanning to focus on understanding and exploiting complex web application logic flaws.


Industry Value


The OSWE is highly valued in the cybersecurity industry because it demonstrates an individual's ability to perform white-box web application penetration testing and identify security vulnerabilities through source code analysis. Unlike automated scanning tools, OSWE holders can manually review code in languages like JavaScript, Python, PHP, and Java to discover subtle security flaws that typically evade detection. This certification is particularly prized by organizations with mature security programs, penetration testing firms, and companies requiring deep application security expertise, as it validates practical skills through a challenging 48-hour hands-on exam that requires candidates to exploit real vulnerabilities in live applications.

OSEP

OSEP Cybersecurity Certification


The Offensive Security Experienced Penetration Tester (OSEP) certification was created by Offensive Security, the same organization behind the renowned OSCP certification. Launched in 2020, the OSEP was developed to address the growing need for advanced penetration testing skills that go beyond basic exploitation. The certification was designed to validate professionals' abilities to conduct sophisticated attacks against modern enterprises, including evading security controls, bypassing defenses, and operating in restricted environments.


The OSEP is highly valued in the cybersecurity industry because it demonstrates hands-on expertise in advanced penetration testing techniques used in real-world scenarios. Unlike many theoretical certifications, it requires candidates to complete a challenging 48-hour practical exam where they must compromise multiple targets in a simulated corporate environment. Employers recognize OSEP holders as having proven capabilities in offensive security operations, making it particularly valuable for penetration testers, red team operators, and security consultants who need to demonstrate their ability to identify and exploit complex vulnerabilities in enterprise networks.

[05] Notable Clients
  • Google
  • Cloudflare
  • GitHub
  • Salesforce
  • Microsoft