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Document ways to increase the security of Data API, including: - Disabling it entirely - Exposing a custom schema instead of the `public` schema Also found a duplicated link in the nav for CLS, so removed it.
34 lines
2.0 KiB
Plaintext
34 lines
2.0 KiB
Plaintext
---
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id: 'securing-your-data'
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title: 'Securing your data'
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---
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Supabase helps you control access to your data. With access policies, you can protect sensitive data and make sure users only access what they're allowed to see.
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## Connecting your app securely
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Supabase allows you to access your database using the auto-generated [Data APIs](/docs/guides/database/connecting-to-postgres#data-apis). This speeds up the process of building web apps, since you don't need to write your own backend services to pass database queries and results back and forth.
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You can keep your data secure while accessing the Data APIs from the frontend, so long as you:
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- Turn on [Row Level Security](/docs/guides/database/postgres/row-level-security) (RLS) for your tables
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- Use your Supabase **anon key** when you create a Supabase client
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Your anon key is safe to expose with RLS enabled, because row access permission is checked against your access policies and the user's [JSON Web Token (JWT)](/docs/learn/auth-deep-dive/auth-deep-dive-jwts). The JWT is automatically sent by the Supabase client libraries if the user is logged in using Supabase Auth.
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<Admonition type="danger" label="Never expose your service role key on the frontend">
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Unlike your anon key, your **service role key** is **never** safe to expose because it bypasses RLS. Only use your service role key on the backend. Treat it as a secret (for example, import it as a sensitive environment variable instead of hardcoding it).
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</Admonition>
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## More information
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Supabase and Postgres provide you with multiple ways to manage security, including but not limited to Row Level Security. See the Access and Security pages for more information:
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- [Row Level Security](/docs/guides/database/postgres/row-level-security)
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- [Column Level Security](/docs/guides/database/postgres/column-level-security)
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- [Hardening the Data API](/docs/guides/database/hardening-data-api)
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- [Managing Postgres roles](/docs/guides/database/postgres/roles)
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- [Managing secrets with Vault](/docs/guides/database/vault)
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