# How to protect sensitive data in a Temporal Application

DevFeed: [How to protect sensitive data in a Temporal Application](<https://devfeed.tech/articles/how-to-protect-sensitive-data-in-a-temporal-application-35869.md>)

Original publisher: [Read original article](<https://temporal.io/blog/how-to-protect-sensitive-data-in-a-temporal-application>)

Author: Joshua Smith

Published: 2025-10-09T00:00:00Z

Content type: tutorial

Language: en

Sources: [Temporal Blog](<https://devfeed.tech/sources/temporal-blog.md>)

Topics: [sensitive data](<https://devfeed.tech/topics/sensitive-data.md>), [Security](<https://devfeed.tech/topics/security.md>), [payload](<https://devfeed.tech/topics/payload.md>), [TLS (Transport Layer Security)](<https://devfeed.tech/topics/tls.md>), [observability](<https://devfeed.tech/topics/observability.md>), [ui](<https://devfeed.tech/topics/ui.md>), [Command-line interface](<https://devfeed.tech/topics/cli.md>)

Tags: [cli](<https://devfeed.tech/tags/cli.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [observability](<https://devfeed.tech/tags/observability.md>), [payload](<https://devfeed.tech/tags/payload.md>), [security](<https://devfeed.tech/tags/security.md>), [sensitive-data](<https://devfeed.tech/tags/sensitive-data.md>), [temporal-concepts](<https://devfeed.tech/tags/temporal-concepts.md>), [tls](<https://devfeed.tech/tags/tls.md>), [ui](<https://devfeed.tech/tags/ui.md>)

## AI overview

This tutorial explains how to protect sensitive data in Temporal applications. It describes Temporal's layered data-security approach, including TLS, Payload Codecs, and a Codec Server, while preserving observability through the Web UI and CLI.

## Source excerpt

Learn how to protect sensitive data in Temporal apps using TLS, Payload Codecs, and a Codec Server without losing Web UI or CLI observability.