Restaking is a mechanism in proof of stake (PoS) blockchain ecosystems that allows staked assets, already securing one network, to be simultaneously used to provide economic security to additional protocols, services, or networks. Popularized by EigenLayer on Ethereum, restaking enables ETH that is already staked to secure the Ethereum beacon chain to also be “restaked” to validate and secure other systems called Actively Validated Services (AVSs), such as oracle networks, bridges, data availability layers, and rollup sequencers.
This concept dramatically improves capital efficiency by allowing a single pool of staked assets to secure multiple networks simultaneously, rather than requiring each new protocol to bootstrap its own independent validator set and security budget from scratch. Restaking creates a shared security marketplace where Ethereum’s massive economic security, hundreds of billions of dollars in staked ETH, can be extended to the broader ecosystem of middleware and infrastructure services. In return for the additional risk of securing these extra services, restakers earn additional yield on top of their base Ethereum staking rewards.
However, restaking also introduces layered slashing risks. If a restaker misbehaves or an AVS experiences a fault, their staked ETH can be slashed not just by Ethereum but also by the additional protocols they have opted into, a risk that moved from theoretical to real once EigenLayer activated slashing on mainnet in 2025. Restaking has become one of the most significant innovations in crypto economics since the advent of proof of stake itself, fundamentally reshaping how blockchain security is allocated and priced, even as its first real stress test showed that the model’s risks are just as real as its efficiency gains.
How Did Restaking Originate and Evolve?
December 2020: The Ethereum Beacon Chain launches, establishing the foundation of ETH staking.
2022: Sreeram Kannan, a professor at the University of Washington, begins publishing research on pooled security that becomes the basis for the EigenLayer concept.
June 2023: EigenLayer launches on Ethereum mainnet in its first stage, accepting native ETH and liquid staking token (LST) deposits.
December 2023: EigenLayer’s TVL surpasses $1 billion as restaking demand surges.
February to April 2024: EigenLayer removes deposit caps, and TVL surges past $6 billion. The first Actively Validated Services begin operating, including EigenDA, EigenLayer’s own data availability service.
May 2024: The EIGEN token is announced, with a novel “intersubjective” forking model intended for disputes that can’t be resolved purely on-chain.
June 2024: Competing restaking protocols Symbiotic and Karak launch, expanding the broader restaking market beyond EigenLayer alone.
October 2024: The EIGEN token becomes transferable, and restaking ecosystem TVL across all protocols exceeds $20 billion.
April 17, 2025: EigenLayer activates slashing on mainnet, the moment the restaking model had been building toward since launch, when AVS operators gain the actual ability to have restaked ETH confiscated for misbehavior. The activation triggers a sharp repricing rather than a smooth transition: EigenLayer’s TVL falls from a peak of over $15 billion to roughly $7 billion by late 2025, and the EIGEN token falls around 86% from its highs. Active AVSs nearly triple over the same period, from about 15 to nearly 40, as speculative, yield-chasing capital exits while more serious operators and institutions, including validators run by Google Cloud and Coinbase Cloud, remain.
Late 2025: New AVS categories go live beyond the original oracle, bridge, and data availability use cases, including EigenAI for verifiable AI inference and EigenCompute for off-chain execution verification, broadening what restaked ETH can actually secure.
Early 2026: The restaking market recovers substantially. EigenLayer’s TVL climbs back to roughly $15 to $16 billion, at times touching an all-time high near $19.7 billion, with about 4.36 million ETH restaked and EigenLayer holding close to 94% of the overall restaking market. Liquid restaking tokens from providers like Ether.fi, which commands the largest share of the LRT market, and smaller players like Renzo and Kelp, remain the most common way retail users access restaking yield.
April 2026: KelpDAO, one of the restaking ecosystem’s liquid restaking token providers, suffers a roughly $293 million exploit, a stark reminder that restaking’s layered design means risk can materialize at the liquid restaking token layer as well as at the AVS or base staking layer.
“Restaking is to blockchain security what cloud computing was to server infrastructure. It pools resources so that every new project doesn’t need to build from scratch.”
How Can You Explain Restaking in Simple Terms?
Double duty security: imagine a security guard who protects a bank during the day and a warehouse at night, using the same training and reputation. Restaking lets your staked ETH “guard” Ethereum and simultaneously protect other blockchain services, earning extra pay for the extra work.
Shared security marketplace: instead of every new blockchain project needing to recruit and pay its own army of validators, restaking lets them rent security from Ethereum’s existing, massive validator network. This is far cheaper and more reliable than starting from scratch.
More yield, more risk: restakers earn extra rewards on top of their base staking yield by opting into additional services. But this comes with additional slashing risk. If something goes wrong with any of those additional services, some of your staked ETH could be confiscated, a risk that stopped being hypothetical once EigenLayer’s slashing mechanism went live in April 2025.
Capital efficiency upgrade: before restaking, if you had ETH staked on Ethereum, that capital could only do one job, secure Ethereum. With restaking, that same ETH can simultaneously help secure an oracle network, a bridge, a data availability layer, and more, all while earning compounded rewards.
The security scaling solution: the crypto industry’s biggest bottleneck was that every new protocol needed to bootstrap economic security independently. Restaking solves this by pooling Ethereum’s existing security and making it available as a shared resource, dramatically lowering the barrier for launching secure infrastructure, though the 2025 slashing event showed that this efficiency comes with genuinely compounded risk rather than a free lunch.
How Does Restaking Compare Across Different Approaches?
| Aspect | Standard ETH Staking | Restaking (EigenLayer) | Liquid Restaking (eETH, ezETH, rsETH) |
|---|---|---|---|
| Asset Used | 32 ETH (native) | Staked ETH or LSTs | Liquid restaking tokens |
| Base Yield | Roughly 3.5% APY | Roughly 3.5% APY | Roughly 3.5% APY |
| Additional Yield | None | Roughly 1% to 5% or more from AVSs | Roughly 1% to 5% or more from AVSs |
| Slashing Risk | Ethereum only | Ethereum plus AVS layers | Ethereum plus AVS layers, since slashing went live in April 2025 |
| Liquidity | Locked until withdrawal | Locked in EigenLayer | Liquid (tradeable token) |
| Complexity | Low | Medium | Medium to high |
| Capital Efficiency | Single use | Multi-use security | Multi-use plus DeFi composable |
| Example | Solo staking or Lido | EigenLayer native restaking | Ether.fi eETH, Renzo ezETH, Kelp rsETH |
What Are Some Real World Examples of Restaking?
EigenDA Data Availability
Scenario: Rollups need cheap, reliable data availability without building and securing their own dedicated layer.
Implementation: EigenDA uses restaked ETH from EigenLayer to secure a high throughput data availability service specifically built for rollups.
Outcome: Rollups access Ethereum-secured data availability without the cost and complexity of bootstrapping their own DA layer, and EigenDA remains the AVS securing the largest share of EigenLayer’s TVL.
Ether.fi Liquid Restaking
Scenario: A user wants to earn stacked yield from staking and restaking without managing the underlying complexity directly.
Implementation: Users deposit ETH via Ether.fi, which stakes it on Ethereum and restakes it through EigenLayer, issuing eETH as a liquid receipt token.
Outcome: Users hold liquid eETH that earns Ethereum staking yield plus EigenLayer restaking rewards plus Ether.fi’s own incentive points, all usable elsewhere across DeFi. Ether.fi has become the dominant liquid restaking provider, commanding the largest share of the LRT market.
KelpDAO Exploit
Scenario: KelpDAO’s rsETH token aggregates rewards across multiple underlying liquid staking assets, giving validators and institutions a way to access EigenLayer restaking rewards without liquidating existing LST holdings.
Implementation: In April 2026, KelpDAO suffered an exploit that resulted in losses of roughly $293 million, one of the largest DeFi security incidents of the year and among the events that contributed to a broader pullback in DeFi TVL during 2026.
Outcome: The exploit became a widely cited case study in restaking specific risk, illustrating that vulnerabilities can emerge at the liquid restaking token layer itself, separate from EigenLayer’s own base protocol or any individual AVS, adding yet another layer to the risk stack restakers need to evaluate.
Oracle Network Security
Scenario: A decentralized oracle service wants strong economic security without building and bootstrapping its own large native staking token from scratch.
Implementation: The oracle network opts into EigenLayer as an AVS, using restaked ETH for its economic guarantees instead.
Outcome: The oracle network gains access to billions of dollars in economic security without needing to convince a large, independent validator base to stake its own token, dramatically lowering the barrier to launching secure infrastructure.
What Are the Advantages of Restaking?
Capital efficiency is the headline benefit, since a single pool of staked ETH can provide security to multiple protocols simultaneously, maximizing the utility of otherwise locked capital. Bootstrapping security becomes far easier for new protocols, which can access Ethereum grade economic security from day one instead of spending years building their own validator networks. Enhanced yield lets restakers earn incremental returns from each AVS they opt into, on top of base Ethereum staking rewards. Ecosystem synergy creates a positive feedback loop where more restaking strengthens both Ethereum and the AVS ecosystem built on top of it. Modular security lets protocols choose exactly how much restaked security they need and are willing to pay for, creating a genuinely flexible marketplace rather than a one-size-fits-all model.
What Are the Disadvantages and Risks of Restaking?
Compounded slashing is the central risk: restakers face slashing exposure from Ethereum and from every AVS they opt into, so a bug or attack on any single one could result in a meaningful loss of staked ETH, a risk that became concrete rather than theoretical once slashing went live in April 2025. Systemic risk is a related concern, since a major AVS experiencing a cascading failure could trigger a broader liquidity crisis across Ethereum’s staking ecosystem. Complexity is real and growing, since managing restaking positions across multiple AVSs with different risk profiles requires sophisticated understanding and ongoing monitoring. Centralization pressure is worth watching too, since liquid restaking protocols could concentrate restaking decisions among a relatively small number of operators, creating a centralization vector within a system originally designed to distribute security more broadly. Finally, even after 2025’s slashing activation, aspects of restaking remain relatively untested under true crisis conditions, and incidents like the April 2026 KelpDAO exploit suggest the ecosystem is still discovering where its weakest points sit.
How Do You Manage Restaking Risk?
Start with well established AVSs that have undergone thorough auditing before opting into newer, less tested services. Use liquid restaking tokens for flexibility to exit positions if risk profiles change, while remembering that the LRT layer itself carries its own protocol risk, as the KelpDAO exploit demonstrated. Diversify AVS selection rather than concentrating all restaked ETH in a single service. Monitor slashing conditions and incident reports across every AVS you are restaked into, and remember that restaking yields reflect genuine additional risk: higher yields consistently mean higher potential for loss, not a free source of extra return.
Frequently Asked Questions About Restaking
What is the difference between staking and restaking? Staking involves locking cryptocurrency to validate a single blockchain network, such as staking ETH to secure Ethereum. Restaking takes already staked assets and additionally commits them to validate other protocols and services. Staking earns one layer of rewards, while restaking earns multiple layers but with compounded risk, risk that became real rather than theoretical once EigenLayer’s slashing mechanism activated in April 2025.
Can I restake liquid staking tokens like stETH? Yes. EigenLayer accepts liquid staking tokens such as stETH from Lido, rETH from Rocket Pool, and similar LSTs for restaking, in addition to native ETH. This means you can earn your underlying LST’s staking yield plus EigenLayer restaking yield simultaneously.
What happens if I get slashed while restaking? If an AVS you are restaked with detects a fault or misbehavior, a portion of your underlying staked ETH can be slashed, meaning confiscated, by that AVS’s slashing contract, in addition to any slashing from Ethereum itself. The amount slashed depends on the specific AVS’s slashing conditions. This mechanism moved from a design document to live, real world consequence when EigenLayer activated slashing on mainnet in April 2025.
What are Actively Validated Services (AVSs)? AVSs are the protocols and services that use restaked ETH for their security. Examples include oracle networks, data availability layers like EigenDA, cross-chain bridges, keeper networks, rollup sequencers, and newer categories like verifiable AI inference and off-chain compute verification. Each AVS defines its own validation tasks and slashing conditions for the restakers who opt in.
Is restaking safe? Restaking introduces additional layers of smart contract risk and slashing risk on top of standard staking. While EigenLayer is a well audited, heavily used protocol, the compounded nature of the risk means restaking is inherently riskier than standard staking, a fact underscored by both EigenLayer’s own 2025 slashing driven TVL crash and the separate 2026 KelpDAO exploit at the liquid restaking token layer. Users should carefully assess each AVS and LRT provider and only restake amounts they can afford to have partially slashed or lost.
Related Terms
- EigenLayer: the protocol that popularized restaking on Ethereum, allowing staked ETH to secure additional Actively Validated Services.
- Staking: the process of locking tokens to help secure a proof of stake network and earn rewards.
- Liquid Staking: a system where staked assets are represented by a tradeable token, such as stETH, that remains usable elsewhere.
- Proof of Stake: the consensus mechanism, used by Ethereum since the Merge, that restaking builds on top of.
- Slashing: the penalty mechanism that confiscates a validator’s or restaker’s staked assets for misbehavior or protocol faults.
- AVS (Actively Validated Service): a protocol or service, such as an oracle network or data availability layer, that uses restaked ETH for its economic security.
- Liquid Restaking Token: a tradeable token, such as eETH or ezETH, representing a restaked position that remains usable across DeFi.
- Ether.fi: the largest liquid restaking protocol by market share, issuing the eETH liquid restaking token.
- Shared Security: the broader concept of pooling economic security across multiple protocols instead of each one bootstrapping its own.
- DeFi: the broader decentralized finance ecosystem that restaking protocols and liquid restaking tokens integrate into.
Sources
- EigenLayer whitepaper and technical documentation
- Sreeram Kannan, “EigenLayer: The Restaking Collective” research paper
- Ethereum Foundation staking and validator documentation
- DefiLlama restaking and EigenLayer TVL data
