In the rapidly evolving world of Web3 and decentralized finance, security remains a top concern for users and developers alike. Japanese startup KEKKAI has stepped into this space with a mission to make crypto transactions safer and more transparent. The company recently announced the successful closure of its Pre-Seed funding round, raising 50 million JPY (approximately $320,000 USD) from Japanese venture capital firm Skyland Ventures.
Founded in early 2023 by entrepreneur Du Ma, KEKKAI officially launched its product in December 2022 after an internal incubation phase that began the previous year. The startup focuses on enhancing wallet security by offering real-time risk assessment during blockchain transactions—particularly through a unique two-step process: transaction data analysis + simulated execution → risk judgment.
The Problem: Hidden Risks in Wallet Transactions
Despite the growing adoption of Web3 technologies, many users still face significant risks when interacting with decentralized applications (dApps). One of the most common vulnerabilities lies in signature requests. When users approve a transaction, wallets often display complex, technical prompts that are difficult to interpret.
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As Du Ma explains, “Ordinary users don’t understand what they’re signing. They can’t see the hidden risks behind a simple ‘Approve’ button.” This lack of transparency opens the door to scams such as blind signing (eth_sign), zero-gas attacks (gasless transactions), and fake NFT frauds.
KEKKAI aims to bridge this gap by providing clear, actionable insights before any transaction is confirmed.
How KEKKAI Works: Simulating Transactions for Risk Detection
At the core of KEKKAI’s technology is a powerful simulation engine that analyzes Ethereum Virtual Machine (EVM) execution data. When a user initiates a transaction, KEKKAI:
- Analyzes transaction data via Ethereum nodes.
- Extracts smart contract opcodes to predict the actual outcome of the transaction.
- Simulates the transaction in a safe environment to forecast changes to the user’s wallet—such as losing ETH, transferring NFTs, or approving unlimited token access.
- Delivers a risk assessment, flagging potential threats like rug pulls, honeypot contracts, or fake token approvals.
For example, if a user attempts to interact with a suspicious NFT marketplace, KEKKAI evaluates multiple factors:
- Whether the NFT has OpenSea blue-check verification
- If the marketplace uses an official contract name
- How much the sale price fluctuates compared to market value
Based on these inputs, KEKKAI generates a comprehensive risk score, alerting users with warnings like “High Risk” or “Potential Scam.”
Overcoming Technical Challenges for Accurate Simulations
Achieving accurate simulation results is no small feat. As Du Ma notes, transaction finality and network forks can impact the reliability of simulated previews. A transaction that appears safe during simulation might be altered or reversed due to blockchain reorganization shortly after confirmation.
To tackle this, KEKKAI spent months refining its simulation algorithms to account for edge cases such as:
- Pending transactions
- Recently mined blocks vulnerable to rollback
- Chain reorganizations (re-orgs)
This optimization ensures that risk assessments remain as accurate and reliable as possible—even in dynamic network conditions.
Broad Chain Support and Expanding Detection Capabilities
Currently, KEKKAI supports transaction simulation and risk detection across approximately 70 EVM-compatible blockchains, making it one of the more versatile tools in the Web3 security landscape. The platform actively monitors for known attack vectors, including:
- Blind signing (eth_sign)
- Gasless transactions ("zero-cost" purchases)
- SetApprovalForAll exploits
- "Upgrade To" phishing scams (mimicking old OpenSea contracts)
- Honeypot tokens
- Fake security updates disguised as ETH transfers
- Rug pulls and malicious token deployments
The team continuously collects new fraud patterns and updates its detection models, aiming to stay ahead of emerging threats in the fast-moving crypto ecosystem.
Product Evolution: From Browser Extension to Full-Scale Integration
Today, KEKKAI operates primarily as a browser extension, seamlessly integrating with popular wallets like MetaMask. However, the team is actively exploring native applications for desktop and mobile platforms, which could open up new distribution channels and partnership opportunities.
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In the future, KEKKAI aims to become a backend security solution for wallet providers, dApps, and exchange platforms—offering white-label risk assessment APIs that enhance safety at scale.
Market Opportunity in Japan’s Growing Web3 Ecosystem
Japan has emerged as a key player in Asia’s Web3 development, with increasing government support and regulatory clarity around digital assets. This favorable environment presents a strong growth opportunity for security-focused startups like KEKKAI.
Du Ma believes that as more mainstream users enter the Web3 space, demand for intuitive, automated security tools will surge. “Security shouldn’t be optional—it should be built into every interaction,” he says.
The founding team brings deep expertise in blockchain infrastructure, SaaS product design, and on-chain analytics. With nine members total, including CTO Regison (former architect of large-scale SaaS open platforms) and BizDev lead Jack (a veteran in blockchain security), KEKKAI combines technical depth with market insight.
Despite being a current student at Waseda University, Du Ma has already founded multiple ventures in SaaS, social tech, and blockchain—demonstrating a rare blend of academic rigor and entrepreneurial drive.
Future Roadmap: Expanding Beyond Transaction Safety
While transaction risk detection remains KEKKAI’s core offering, the company plans to expand into broader Web3 security domains. Potential future initiatives include:
- Real-time monitoring for DeFi portfolio risks
- AI-powered anomaly detection for wallet activity
- Educational tools to improve user awareness
- Collaborations with regulated exchanges and custodians
With its strong technical foundation and growing market traction, KEKKAI is positioning itself as a foundational layer of trust in Japan’s expanding Web3 economy.
Core Keywords:
Web3 security, crypto transaction safety, KEKKAI, blockchain risk detection, EVM simulation, NFT fraud prevention, wallet security, smart contract analysis
Frequently Asked Questions (FAQ)
Q: What types of scams can KEKKAI detect?
A: KEKKAI identifies multiple threat types including blind signing (eth_sign), gasless transactions, fake NFT listings, honeypot tokens, rug pulls, and phishing attempts like "Upgrade To" scams mimicking legitimate contracts.
Q: Is KEKKAI compatible with all wallets?
A: Currently, KEKKI works primarily as a browser extension compatible with EVM-based wallets like MetaMask. Support for additional wallets and platforms is under development.
Q: Does KEKKAI store my private keys or personal data?
A: No. KEKKAI does not access or store private keys, seed phrases, or sensitive user information. It only analyzes transaction data in real time without compromising privacy.
Q: On which blockchains does KEKKAI operate?
A: KEKKAI supports around 70 EVM-compatible chains, including Ethereum, BNB Chain, Polygon, Arbitrum, Optimism, and others.
Q: How does transaction simulation improve security?
A: By simulating a transaction before it’s signed, KEKKAI predicts its real-world impact—such as unintended fund transfers or approvals—allowing users to avoid hidden risks.
Q: Can developers integrate KEKKAI into their dApps?
A: While not yet publicly available, KEKKAI plans to offer API-based integration for dApps and wallet providers in the near future.
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