Slashing
Slashing is a penalty in proof-of-stake networks that destroys part of a validator's staked coins and forcibly removes it for a dangerous rule break, such as signing twice.
How it works
Proof-of-stake security relies on cheating costing money. If a validator signs two different blocks for the same slot or contradictory votes, the network sees the proof and punishes it: part of the stake is burned and the validator is ejected.
Slashing is different from ordinary downtime penalties. On Ethereum, a validator that is simply offline misses rewards and pays small penalties roughly equal to what it would have earned. Slashing is for actions that could harm the network. If many validators are slashed at once, the penalty grows, because the network suspects a coordinated attack.
If you stake through a pool, liquid staking or restaking, an operator's mistake hits your coins too. With restaking, both the base network and connected services can slash, each with its own rules.
A pool operator accidentally runs the same keys on two servers, and 100 of its validators with 32 ETH each sign conflicting messages. Even if the penalty is just 1% of stake, that is 32 ETH in total, and the validators are ejected and stop earning. The pool's stakers take the loss unless the operator has cover.
A common mistake is assuming only people who run their own validator face slashing. Through pools and liquid staking protocols the risk passes to you. Choose operators with a good track record, a spread across different client software and a clear compensation policy.
Questions and answers
What is slashing in simple terms?
It is the network taking part of a validator's deposit for a serious rule break. That makes cheating unprofitable.
What causes slashing?
Most often double signing: two different blocks or votes for the same spot. Plain server downtime does not cause slashing, only small penalties.
Can slashing affect my coins in a staking pool?
Yes. If the pool operator breaks the rules, the loss is shared by everyone whose coins were with its validators.
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Updated: 2026-10-19