How Does ether.fi Stake (eETH/weETH) Work?
ether.fi's eETH lets you earn both standard ETH staking rewards and EigenLayer restaking rewards in a single liquid token. It's one of the most adopted liquid restaking tokens with deep DeFi integrations, but it carries the combined risk of ETH staking and EigenLayer slashing — losses from EigenLayer AVS failures would affect all eETH holders.
TVL
$5.1B
Sector
Liquid Staking
Risk Grade
C
Value Grade
C+
Core Mechanisms
2.1.1
eETH rebasing liquid staking token: deposit ETH, receive eETH backed by validator stakes
Standard liquid staking model (Lido-pattern). Users deposit ETH into ether.fi's LiquidityPool contract, receive eETH (rebasing). Balance formula: TotalPooledEth x (shares/totalShares). 90% of rewards to stakers, 5% to node operators, 5% to protocol treasury. eETH launched November 2023.
2.1.2
weETH non-rebasing ERC-4626 wrapper for DeFi composability
Standard wrapped LST pattern. weETH wraps eETH as a value-accruing non-rebasing token, compatible with Aave, Morpho, Pendle, Balancer, Uniswap V3 as collateral. OFT adapter enables cross-chain deployments on Arbitrum, Base, and others.
2.2.1
NovelNative EigenLayer restaking at protocol level — all eETH validators natively restaked into EigenLayer
Novel: Protocol-level native restaking (not LST-restaking). ether.fi validators are native restakers in EigenLayer — ETH is staked and restaked simultaneously, bypassing LST withdrawal delays. This enables DeFi composability of eETH while still earning AVS rewards. Live slashing active since April 2025.
2.3.1
NovelNon-custodial ECIES-encrypted validator key management with IPFS storage
Novel: ECIES public-key encryption of validator keys with IPFS storage and on-chain hash commitment. Operators decrypt via shared secret without ever holding plaintext keys. Enables permissionless node operator participation while maintaining key security. DVT integration with SSV Network in progress.
4.1.3
EtherFiOracle permissioned committee for eETH exchange rate and reward reporting
Permissioned multi-party committee oracle aggregates beacon chain rewards and EigenLayer restaking rewards, updating TotalPooledEth periodically. Used for reward accounting and eETH/weETH exchange rate. Not a real-time price feed — protocol-internal only.
How the Pieces Interact
An AVS slashing event reduces eETH's TotalPooledEth, proportionally reducing all holders' balances simultaneously. A large slashing event could trigger mass exits, overwhelming the liquidity buffer and causing eETH to trade at a discount on secondary markets — creating a feedback loop of forced liquidations.
Any eETH depeg (from slashing or withdrawal queue pressure) propagates immediately to all weETH-collateralized positions. Aave, Morpho, and Pendle liquidations would occur simultaneously, creating a self-reinforcing sell cascade as liquidators dump weETH into thin markets.
ether.fi's withdrawal mechanism bypasses EigenLayer's 7-day unbonding only when the liquidity pool holds sufficient ETH buffer. During a market stress scenario where both the liquidity buffer is drained AND EigenLayer unbonding is needed, users face the full 7-day delay — precisely when they most need to exit.
If validator key management fails (IPFS availability, ECIES implementation bug, or key compromise), affected validators could be slashed both on Ethereum consensus layer AND by EigenLayer AVSs simultaneously — a double-slashing scenario amplifying losses beyond standard validator risk.
What Could Go Wrong
- EigenLayer restaking slashing: eETH is natively restaked via EigenLayer, meaning all eETH holders share proportional losses if an AVS is slashed. With live slashing active since April 2025, a major AVS incident could reduce eETH's value for all 300,000+ holders simultaneously.
- Withdrawal liquidity risk under stress: While ether.fi claims withdrawals don't require waiting for EigenLayer's 7-day unbonding if the protocol has sufficient liquidity, a large simultaneous exit (e.g., during a market crisis) could overwhelm the liquidity buffer, forcing some users into the 7-day queue and creating secondary market discount pressure.
- weETH DeFi integration concentration: weETH is used as collateral in Aave, Morpho, Pendle, and other protocols. An eETH depeg event (from slashing or withdrawal pressure) would cascade as a liquidation wave across all weETH-collateralized positions simultaneously.
- Smart contract complexity across multiple auditors: ether.fi's staking infrastructure was audited by CertIK, Certora, Nethermind, and Omniscia across multiple versions. Multi-auditor complexity doesn't eliminate residual risk from novel EigenLayer integration code.
Major AVS Slashing Event Triggers eETH Depeg
TailTrigger: A significant EigenLayer AVS experiences a slashing event reducing eETH TotalPooledEth by 5%+, triggering mass withdrawal requests.
- 1.AVS slashing event reduces eETH's total ETH backing by 5%+ — All eETH holders' balances reduced proportionally; eETH trades at discount vs ETH
- 2.Mass withdrawal requests drain ether.fi's liquidity buffer — Remaining withdrawals face 7-day EigenLayer unbonding delay; eETH discount deepens on secondary markets
- 3.weETH-collateralized positions in Aave/Morpho reach liquidation thresholds — Cascade of weETH liquidations into thin markets; liquidators dump weETH, accelerating depeg
- 4.Pendle PT/YT markets for eETH/weETH reprice; structured product unwinding — $5B+ TVL impairment; contagion into ETH spot markets from forced deleveraging
Risk Profile at a Glance
Overall: C (50/100)
Lower score = safer