# Security reference

> The details you look up. Security helpers, the automated checks, and every past advisory.

Source: https://contributors.home-assistant.io/security/reference/

The pages in this section are for looking things up. For how to use them, start with the [guides](https://contributors.home-assistant.io/security/guides/).

- [Security helpers](https://contributors.home-assistant.io/security/reference/helpers/): every helper of Core and the frontend for certificates, redaction, admin access, webhooks, paths, and untrusted content.
- [Automated security checks](https://contributors.home-assistant.io/security/reference/checks/): the tools that check code, dependencies, and workflows, and where they run.
- [Past advisories](https://contributors.home-assistant.io/security/reference/advisories/): every published advisory, grouped by kind, with what went wrong and the lesson.