How Restaking Is Changing Ethereum Security
Restaking reuses staked Ether to secure new services, which increases capital efficiency but also introduces a new correlated slashing risk surface.
Restaking takes the economic security of an existing proof of stake network and reuses it to secure new protocols. On Ethereum this means that the same Ether that already backs the beacon chain can also back oracles, data availability layers, bridges and other services.
From a technical perspective restaking sits between the consensus layer and application layer. Validators opt in to extra slashing conditions defined by actively validated services. These services monitor behaviour and can request slashing when a validator misbehaves.
This model increases capital efficiency but concentrates risk. A single bug in an actively validated service can cascade into slashings that affect the base Ethereum validator set. That is why careful contract audits, conservative limits on total value and circuit breakers are essential.
Over time restaking will probably settle into a layered structure. The base chain focuses on safety and liveness. Above it you will see specialised security committees with different risk profiles for low value experiments and high value infrastructure. For traders this means a richer landscape of yield and a new risk surface to understand.