Ethena USDe is a synthetic US Dollar (USD)-pegged stablecoin created by Ethena Labs. It's designed to function as a censorship-resistant, scalable, and stable internet bond. This stablecoin is different from traditional ones because it is backed by various types of collateral, including cryptocurrencies like stETH (staked Ethereum), WBETH, mETH, WETH, USDT, USDC, and other assets. To maintain its stability, it uses a delta-neutral hedging strategy. This involves holding assets in a way that minimizes exposure to price volatility, such as opening a short position on Ethereum to hedge against potential decreases in the asset's value. Users can mint USDe by depositing approved collateral, and whitelisted counterparties can redeem it at a one-to-one rate with USD-pegged assets. Overall, Ethena USDe is part of an effort to innovate within the stablecoin space, offering a decentralized and scalable alternative to fiat-backed options.

Ethena Labs was founded by Guy Young in July 2023, focusing on creating a censorship-resistant, scalable, and stable crypto-native "Internet Bond." The Ethena USDe, a synthetic US Dollar, was launched to the public on February 19, 2024.

Yes, you can stake tokens in the Ethena USDe project, specifically by staking USDe tokens. Here’s a breakdown of staking within the Ethena USDe ecosystem:

• Staking Process: When you stake USDe tokens, they are transferred to the staking contract where you receive sUSDe (staked USDe) in return. As you continue staking, your sUSDe earns additional USDe rewards. This staking process utilizes the StakedUSDe smart contract, which conforms to the ERC4626 Token Vault standard for composability and reward accrual.

• Rewards and Benefits:

  • Stakers of USDe can earn rewards in various potential ways:
    • Rewards are paid in USDe, with current yields for sUSDe averaging around 3.72% source.
    • Rewards are accrued from a combination of ETH staking, yields from perpetual and futures markets, and fixed rewards on liquid stablecoins.
    • A 6% APY is offered on USDe holdings on platforms like CoinList without the need for traditional staking [CoinList offer source].
    • In partnership with Allstake, users staking USDe and sUSDe can earn Allstake Points and Ethena Sats source.

• Considerations: There's a mandatory 7-day cooldown period from when you request to unstake your sUSDe until you can retrieve your USDe. If secondary markets exist, you may have the option to sell sUSDe during this period, though Ethena Labs does not assure the creation of such markets.

For those engaging with Ethena's staking options, it provides a way to earn passive income while participating in the decentralized finance (DeFi) ecosystem through various reward structures and the innovative use of synthetic dollars.

Ethena USDe has not suffered any direct hacks or exploits on its native protocol or network where a significant amount of money was lost. However, there was an indirect issue related to a hack on the Bybit exchange. In February 2025, Bybit experienced a $1.4 billion hack that affected various cryptocurrencies. Although Ethena USDe had about $30 million exposure in derivatives related to Bybit, Ethena Labs assured that their stablecoin remained solvent. USDe's reserves, held in off-exchange custody, were sufficient to cover the potential losses, and the protocol emphasized that no collateral was held directly on Bybit source.

The Ethena USDe project employs several security measures to ensure the safety and integrity of its system. Here are key measures and recent developments aligned with their strategy:

Security Measures:

1. Whitelisting Mechanism:

   • Only whitelisted user wallet addresses can mint and redeem USDe, preventing unauthorized access and ensuring only verified actors can interact with these functions Ethena Documentation.

2. Off-Exchange Custody:

   • All collateral assets backing USDe are held in off-exchange custody with Copper Clearloop, mitigating exchange-related risks [Messari News].

3. Multi-Signature Security:

   • Changes to whitelisted addresses require multi-sig transactions by Ethena and external parties, increasing trust and security Ethena Documentation.

4. Air-Gapped Key Management:

   • Keys for mint/redeem smart contracts are generated securely in an air-gapped environment, minimizing unauthorized access risks [Ethena Documentation].

5. Real-Time Reserve Verification:

   • Integration with Chaos Labs' Edge Proof of Reserves Oracles ensures real-time verification of reserves using zero-knowledge proofs, enhancing transparency and risk management [Messari News].

6. Hedged Collateral:

   • Utilizes delta-neutral derivative positions to hedge against volatility, using a cash-and-carry strategy with assets like bitcoin and ether futures [Messari News].

Unique Vulnerabilities:

• Regulatory Challenges:

  • The project faced legal hurdles in Germany, with BaFin halting the offering of USDe due to deficiencies in the token's authorization process [Messari News].

• Domain Compromise Incident:

  • Ethena Labs experienced a security breach involving their domain registrar, impacting the website but not the underlying protocol [Messari Legal & Regulatory].

• Market Volatility:

  • The asset has shown an adaptive market strategy with increased futures trading volume observed in late March 2025, likely responding to market conditions [Chart Data]. Despite volatility, it maintains a stable price, closely pegged to USD.

Despite these vulnerabilities, Ethena USDe's security framework effectively combines traditional financial safeguards with decentralized finance's innovative resilience, making it robust against diverse risk scenarios.

The Ethena USDe project has undergone several audits as part of a multi-phased program to ensure security and reliability. Here is a list of the audits in chronological order, with the most recent first:

• Code4rena (Public Audit): Conducted as part of a public audit process. The exact date is not specified, but it is one of the phases mentioned in their audit strategy.
• Chaos Labs: Economic and financial risk audit conducted by Chaos Labs. Date not specified.
• Pashov (Independent Audit): An independent audit undertaken by Krum Pashov, who has extensive experience with over 50 audits. No specific date is provided.
• Quantstamp, Spearbit & Cantina (Phase 3 Audit): Conducted by leading firms Quantstamp, Spearbit, and Cantina. Dates not provided for each specific audit.
• Spearbit (Phase 2 Audit): Architecture design review and economic risk factor analysis, involving Kurt Barry (former Lead Engineer at MakerDAO). Specific date not mentioned.
• Zellic (Phase 1 Audit): Initial audit on Version 1 of the protocol, where no critical vulnerabilities were found. Dates for the completion were not specified.

These audits reflect a comprehensive approach by Ethena Labs to maintain a high level of security and trust in their platform. For more detailed information and the exact timing of these audits, you might refer to their official documentation or audit reports directly from Ethena's resources.