The delta-neutral synthetic dollar protocol eliminates the offchain signing attack surface by design, then layers in real-time monitoring, automated pause capability, and transaction-level verification
Good contract architecture eliminates one class of risk. It does not eliminate all of them. Neutrl, the team behind NUSD, built their synthetic dollar protocol with that distinction in mind, designing out the offchain signing attack surface at the contract level, then integrating Hypernative to monitor for the threats that deterministic design cannot anticipate.
The deployment spans Hypernative's Platform and Guardian products. Platform monitors Neutrl's contracts and connected protocols in real time, routing critical and high-severity alerts to automated response actions and lower-severity signals to manual review queues. Guardian acts as an independent verification layer, simulating every transaction before it is signed.
Neutrl's security posture starts at the contract level. The team made a deliberate early decision to build NUSD's settlement (minting and redemption) mechanics without any offchain backend component. When a user deposits collateral, the smart contract queries Chainlink price oracles directly at execution time. No backend server decides the quote. No privileged signer can dictate how much NUSD is issued. If collateral price falls outside a defined safe range, the transaction reverts.
The reasoning was direct: smart contracts are deterministic, once deployed their behavior is known and predictable. Backend servers are different. They require infrastructure management, permissions, and access controls, each of which creates a meaningful attack surface.
But deterministic design has its own limits. A smart contract creates a well-specified state machine, but there is always a possibility that behavior falls outside what was anticipated. Connected protocols, oracle edge cases, and emergent onchain conditions can all introduce risk that contract architecture alone cannot prevent. That residual surface is what Hypernative covers.
We were ultimately more comfortable with an onchain settlement design than relying on an offchain system with a larger attack surface and the operational burden of maintaining infrastructure with perfect uptime.
Ikigaieuh, Smart Contract Engineer @ Neutrl
Hypernative holds a pauser role on Neutrl's contracts. The team's logic on this is clear: a false pause is preferable to a missed exploit. Critical and high-severity alerts, primarily hack and exploit detection signals, trigger automated pausing. Medium- and low-severity alerts route to manual review. The monitoring extends across Neutrl's own contracts, Ethena, Sky and Pendle on mainnet, and CEX-based activity feeds, giving the team visibility across the full collateral and yield stack the protocol depends on.
Beyond the security layer, the team routes minting and redemption activity to Telegram in real time, giving them a live view of fund flows as they happen. The platform has also surfaced useful signals beyond security proper, including MEV bot activity around the protocol.
For transaction signing, Guardian is used as a mandatory pre-execution verification step. The team chose not to configure it as an automatic co-signer. Instead, every transaction is treated as critical, individually reviewed, and approved by each signer. The process is more rigid by design: it keeps each signer directly accountable for what they approve.
Real-time monitoring and independent transaction verification make it possible to scale while covering for the unknowns that inevitably emerge over time. Security should be treated as a continuous process. You should never become too comfortable or complacent with your security posture.
Ikigaieuh, Smart Contract Engineer @ Neutrl
Neutrl is the team behind NUSD, a delta-neutral synthetic dollar designed to capture yield from OTC arbitrage, funding rate inefficiencies, and DeFi-native market-neutral strategies. Built entirely onchain with $170M in TVL, NUSD uses Chainlink oracle pricing and the Euler ERC-7726 standard to eliminate off-chain signing risk at the protocol level. Neutrl provides a single, high-yield access point for capital allocators seeking market-neutral exposure in digital assets.
Hypernative is a real-time monitoring, risk detection and automated response solution that identifies threats with high accuracy and gives customers precious minutes to respond before exploits can do damage. The platform tracks both onchain and offchain data sources and uses battle-tested, sophisticated machine learning models, heuristics, simulations, and graph-based detections to identify over 300 risk types, from smart contract hacks and bridge security incidents to frontend compromises, market manipulations and private key theft.
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