Restaking
What is restaking in crypto?
Staked ETH already secures Ethereum. Restaking pledges the same stake as security for additional services, which pay for that security, so a single unit of capital earns from several sources at once. EigenLayer popularized the model and actively validated services are the consumers of it.
The yields stack and so do the slashing conditions. Each additional service adds its own rules under which stake can be destroyed, written by a different team with a different security budget and audited to a different standard. A validator opted into several services is exposed to the weakest of them, and the correlation is what makes this different from ordinary diversification: operators concentrate in the same handful of popular services, so a single flawed slashing condition can hit a large share of them at once.
Liquid restaking tokens add a further layer, converting a restaked position into a transferable asset that circulates as collateral elsewhere. That propagates any slashing event into lending markets that never explicitly took the exposure. The question worth asking about any restaking yield is which services generate it and what each of them can slash for.