Building the security layer Web3 forgot.
Sentinel exists because the Web3 ecosystem grew faster than its security infrastructure. Every week, users lose assets not to sophisticated zero-day exploits, but to stale token approvals, phishing signatures, and malicious contracts that a basic scan would have flagged. The attack surface is public, the data is on-chain, and the tools to interrogate it have been available for years — they just have not been assembled into something a non-expert can use in thirty seconds.
We believe security should not be the exclusive domain of developers and auditors. If you hold cryptocurrency, you face the same threat vectors as institutional participants, with far fewer resources to defend against them. Sentinel's mission is to close that gap — to give every wallet holder the visibility that until now required custom tooling or expensive professional services.
Our philosophy is simple: read-only by default, user-controlled by design. We never request transaction signing permissions. We never hold custody of any asset. We query the same public blockchain data that block explorers use and present it in a form that enables action. What you do with the information is always your decision.
Sentinel is a wallet security scanner. Enter any Ethereum-compatible wallet address and Sentinel performs a real-time analysis across three dimensions: approval audit, threat intelligence cross-reference, and behavioral pattern analysis. The entire process completes in under eight seconds and requires no wallet connection, no signature, and no account creation.
The approval audit enumerates every ERC-20 and NFT approval associated with the address — including unlimited approvals granted years ago to protocols you may no longer use. Each spender contract is resolved against a live threat database that aggregates intelligence from Forta, GoPlus, and proprietary drainer-tracking infrastructure. Contracts flagged as malicious, deprecated, or compromised are surfaced with severity ratings.
The behavioral layer examines your transaction history for anomalous patterns: dust inflows from known attack wallets, unusual MEV interactions, and signature replay signatures. This is the layer that catches threats before they appear in databases — because attacker behavior has statistical fingerprints that precede their addresses being formally flagged. All results are rendered client-side. Nothing is stored on Sentinel's servers beyond a 30-day cache of scan results used for performance optimization.
Sentinel is backed by seed-stage capital from leading Web3 security and infrastructure investors. We have raised sufficient runway to execute our product roadmap without compromising on our core principle: we are not a custodian and do not handle user funds. Our investors were selected for alignment with our security-first philosophy, not for valuation pressure. We are not currently seeking additional fundraising and have no immediate plans to tokenize any aspect of the product.
Delaware File Number: 7842901 · EIN: 88-3924617
For press inquiries, interview requests, and media assets, contact us at [email protected]. We aim to respond to media requests within two business days. A press kit including product screenshots, logo files, and executive bios is available on request.
Sentinel is a team of fourteen and growing. We hire for security engineers, threat analysts, and infrastructure specialists. If you care deeply about keeping users safe in a space that moves faster than its own safety standards, we want to hear from you. Reach out to [email protected] — no recruiter screens, first contact goes directly to a founder.