Restaking means taking ETH that's already staked to secure Ethereum and pledging the same stake to secure other services as well, for extra rewards. One deposit, several jobs, several paydays. Also several ways to lose it. That second part is why restaking has divided people since EigenLayer made it popular in 2023.

Staking first, briefly

Ethereum is kept honest by validators who lock up ETH as a bond. Behave and you earn a yield. Cheat, or run a badly configured validator, and part of your bond gets "slashed", taken away as a penalty. The bond is what makes the promise believable.

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What restaking adds

New infrastructure, oracles, bridges, data layers and the like, needs the same kind of bond to be trusted. Raising billions from scratch is slow. Restaking lets them borrow Ethereum's. You opt your staked ETH, or a liquid staking token that represents it, into securing one or more of these services. EigenLayer calls them AVSs, actively validated services. They pay you extra. In return they get the right to slash your stake if you break their rules.

One stake of ETH securing Ethereum and three extra services at once Your 32 ETH stake one pot, can be slashed by any of them Ethereumbase staking yield Oracle+ extra reward Bridge+ extra reward Data layer+ extra reward More services, more rewards. More slashing conditions on the same money.
Restaking stacks jobs on one bond. The rewards add up, and so do the ways to lose part of it.

Why people like it

Capital that was doing one job now does four. For the holder that's extra yield on ETH they were holding anyway. For a new project it's security on day one instead of years of recruiting validators. Both sides get something real.

Why people worry

Every service you secure is a new set of rules you can be punished under. A bug in a small, new service can now take a bite out of stake that also backs Ethereum. For a long time that risk was mostly theoretical, because slashing on EigenLayer only switched on in April 2025. It's live now.

The second worry is concentration. If a big share of all staked ETH ends up restaked into the same few services, one failure there stops being a restaker's problem and becomes Ethereum's. Vitalik Buterin wrote in 2023 that Ethereum's own consensus shouldn't be overloaded to prop up outside services. That warning still frames the argument.

⚠ Red flag

Then there are liquid restaking tokens, receipts you can trade while your ETH stays restaked. They add a layer that can crack under stress. In April 2024 Renzo's ezETH briefly lost its peg to ETH on some exchanges, and borrowers who'd used it as collateral were liquidated in the rush.

How to think about it

Restaking isn't free yield. It's extra yield for extra, specific risk. Before opting in, find out which services your stake will secure, what each one can slash you for, and how long each has been running. Ask what's paying the extra reward, real fees or a new token, the same question our yield farming guide tells you to ask of any number. If you can't get a straight answer, that is the answer.