Slashing
A penalty mechanism where validators lose staked cryptocurrency for misbehavior or protocol violations.
Last Updated
2026-03-29
Related Concepts
What is Slashing?
Slashing is an automatic penalty in Proof of Stake blockchains where validators lose part of their staked collateral for misbehaving. It makes attacks economically painful by turning bad behavior into direct financial loss.
How does Slashing work?
- A validator stakes cryptocurrency to participate in consensus.
- The validator misbehaves double-voting, signing conflicting blocks, or prolonged downtime.
- The protocol detects the violation and automatically burns a portion of the stake.
- Severe violations result in ejection from the validator set entirely.
Why does Slashing matter?
It is the economic security backbone of Proof of Stake. Unlike Proof of Work where an attacker only wastes electricity, PoS attackers risk losing real capital, making large-scale attacks prohibitively expensive.
Key features of Slashing
- Automatic enforcement by the protocol no human intervention
- Tiered severity from minor penalties to full stake loss
- Slashed funds are burned or redistributed to honest validators
- Fundamental to PoS network security
Examples of Slashing
An Ethereum validator that double-votes loses their entire 32 ETH stake. A validator that briefly goes offline loses a small fraction.
Lido validators face slashing risk if their node infrastructure fails.