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Wallet Security, Reimagined

Audit-grade protection for individuals.

In blockchain, where individuals hold custody of their own funds, they should also be in charge of their own security. OpenSentry brings audit logic to the wallet layer, shifting security from protocol teams to individual users.

OpenSentry is a public good.
Free and open for everyone.

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Transaction Analysis
Critical Risk Detected

All your deposited funds could be withdrawn at any time by the contract's admin, make sure you trust this protocol.

The Security Gap

Every blockchain interaction requires trusting code.
Today, only well-funded protocols get professional audits.
Individual users interact with all kinds of contracts without protection.
Behind the "Confirm Transaction" button may be exploit paths you don't understand.

Protocol Audits

Deep security audits for developers and teams are costly and time-consuming, and are not accessible to many projects.

Individual Risk

Users are left to trust protocols to take care of their security, or use wallet protection services that rely on blacklists and reputation scores but don't analyze the code.

How it Works

OpenSentry analyzes a contract like an auditor would, applying techniques that have so far been only available in professional audits.

Line-by-line Code Analysis

Static Analysis

Symbolic Execution

Exploit Pattern Detection

Business & Financial Logic Verification

Arithmetic & Precision Verification

Access Control Verification

Execution Path Simulation

Actionable Intelligence

OpenSentry tells you exactly what is the issue and what it means for your funds in plain language.

STANDARD WALLET

"Warning: Request may not be safe."

VS
OPENSENTRY ANALYSIS

"Depositing funds could result in losing your accumulated interest in the future if the contract is compromised."

"Withdrawing from this contract would result in receiving 0.00048 ETH (≈$7) less than is owed, due to a rounding error."

OpenSentry democratizes audit-level protection.

Prevents avoidable losses

Increases trust in decentralized systems

Expands safe participation in Web3

Roadmap

Phase 1
Core Engine In Progress

Building the foundational analysis and exploit detection capabilities.

Phase 2
Early User Testing

Launching a public Beta standalone tool for testing and gathering feedback by early users.

Phase 3
Wallet Extension

Building the MetaMask wallet extension for seamless in-wallet protection.

Phase 4
API & Developer Access

Empower developers with an open-source API.

Built by an Auditor

Liron Achdut
Liron Achdut
Smart Contract Auditor & Activist

I am a blockchain developer and smart contract auditor working on security-critical systems. I review production contracts and analyze exploits for a living. I see firsthand how users are exposed to hidden risks that no wallet warns them about. OpenSentry is my answer to that gap.

My path to Web3 started through activism — a belief that decentralized systems can shift power to individuals. As I evolved into auditing, I realized the security expertise that protects protocols should be a public good, not a luxury.

Professional auditing is a long, intensive process that demands deep expertise — and not every project can afford it. I sometimes offer my services for free or near-free to projects I believe in, but that doesn't scale. OpenSentry is how I scale that protection to every user, for every protocol they interact with.

Get in Touch

Have questions, feedback, or want to collaborate? Reach out directly.

liron.achdut@gmail.com @lirona1

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