<!--
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title: Slashing Overview
parent:
  title: "slashing"
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# `x/slashing`

## Abstract

This section specifies the slashing module of the Cosmos SDK, which implements functionality
first outlined in the [Cosmos Whitepaper](https://cosmos.network/about/whitepaper) in June 2016.

The slashing module enables Cosmos SDK-based blockchains to disincentivize any attributable action
by a protocol-recognized actor with value at stake by penalizing them ("slashing").

Penalties may include, but are not limited to:

* Burning some amount of their stake
* Removing their ability to vote on future blocks for a period of time.

This module will be used by the Cosmos Hub, the first hub in the Cosmos ecosystem.

## Contents

1. **[Concepts](01_concepts.md)**
   * [States](01_concepts.md#states)
   * [Tombstone Caps](01_concepts.md#tombstone-caps)
   * [ASCII timelines](01_concepts.md#ascii-timelines)
2. **[State](02_state.md)**
   * [Signing Info](02_state.md#signing-info)
3. **[Messages](03_messages.md)**
   * [Unjail](03_messages.md#unjail)
4. **[Begin-Block](04_begin_block.md)**
   * [Evidence handling](04_begin_block.md#evidence-handling)
   * [Uptime tracking](04_begin_block.md#uptime-tracking)
5. **[05_hooks.md](05_hooks.md)**
   * [Hooks](05_hooks.md#hooks)
6. **[Events](06_events.md)**
   * [BeginBlocker](06_events.md#beginblocker)
   * [Handlers](06_events.md#handlers)
7. **[Staking Tombstone](07_tombstone.md)**
   * [Abstract](07_tombstone.md#abstract)
8. **[Parameters](08_params.md)**
9. **[Client](09_client.md)**
    * [CLI](09_client.md#cli)
    * [gRPC](09_client.md#grpc)
    * [REST](09_client.md#rest)