> ## Documentation Index
> Fetch the complete documentation index at: https://cosmos-docs-sync-security-docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Guides Intro

> Version: v0.53

These practical guides walk you through implementing advanced features in the Cosmos SDK. Learn how to use vote extensions to build secure oracles and mitigate auction front-running attacks with step-by-step tutorials.

<CardGroup cols={2}>
  <Card title="Vote Extensions - Auction Front-Running" icon="gavel" href="/sdk/v0.53/tutorials/vote-extensions/auction-frontrunning/getting-started">
    Learn how to prevent auction front-running using vote extensions to create a fair auction process.
  </Card>

  <Card title="Vote Extensions - Oracle" icon="database" href="/sdk/v0.53/tutorials/vote-extensions/oracle/getting-started">
    Build a secure and reliable oracle using vote extensions to include trusted data submissions in blocks.
  </Card>
</CardGroup>