Flatt Security
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Overview
Flatt Security is a Tokyo cybersecurity company founded in 2017 that focuses on securing modern web and cloud applications. It provides manual penetration testing by engineers and develops Shisho Cloud, a product that scans code and infrastructure configuration. The company targets fast moving development teams rather than traditional enterprise audit cycles.
News
Pwning Claude Code in 8 Different Ways
IntroductionHello, I'm RyotaK (@ryotkak), a security engineer at GMO Flatt Security Inc.A few months ago, I came across an interesting behavior while using Claude Code-it executed a command without my approval.Since I wasn't using the permission bypass mo
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CVE-2025-59489: Arbitrary Code Execution in Unity Runtime
IntroductionHello, I'm RyotaK (@ryotkak), a security engineer at GMO Flatt Security Inc.In May 2025, I participated in the Meta Bug Bounty Researcher Conference 2025.During this event, I discovered a vulnerability (CVE-2025-59489) in the Unity Runtime tha
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Why XSS Persists in This Frameworks Era?
IntroductionHi, I'm canalun (@i_am_canalun), a security researcher at GMO Flatt Security Inc.This article explores the question: "Why Does XSS Still Occur So Frequently?" We will delve into why this notorious and classic vulnerability despite the widespre
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Cybersecurity AI Agent
Tuned by world-class offensive security experts, our AI agent, Takumi, uncovers critical vulnerabilities within your codebase that other tools miss, such as business logic bugs and broken authorizations. This allows you to receive actionable alerts with m
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