# Security Best Practices
Pipedream implements a range of privacy and security measures meant to protect your data from unauthorized access. Since Pipedream workflows, event sources, and other resources can run any Node.js code and process any event data, you also have a responsibility to ensure you handle that code and data securely. We've outlined a handful of best practices for that below.
- Store secrets as Pipedream connected accounts or environment variables
- Deliver data to Pipedream securely
- Send data out of Pipedream securely
- Add authentication to incoming event data
- Validate signatures for incoming events, where available
- Audit code or packages you use within a workflow
- Limit what you log and return from steps
# Store secrets as Pipedream connected accounts or environment variables
Even if your workflow code is private, you should never store secrets like API keys in code. These secrets should be stored in one of two ways:
- If Pipedream integrates with the app (opens new window), use connected accounts to link your apps / APIs.
- If you need to store credentials for an app Pipedream doesn't support, or you need to store arbitrary configuration data, use environment variables.
Read more about how Pipedream secures connected accounts / environment variables here.
# Deliver data to Pipedream securely
Whenever possible, encrypt data in transit to Pipedream. For example, use HTTPS endpoints when sending HTTP traffic to a workflow.
# Send data out of Pipedream securely
When you connect to APIs in a workflow, or deliver data to third-party destinations, encrypt that data in transit. For example, use HTTPS endpoints when sending HTTP traffic to third parties.
# Add authentication to incoming event data
You can add many public-facing triggers to your workflows. For example, when you add an HTTP trigger to your workflow, anyone with the associated trigger URL can invoke it. You should protect your workflow with an authentication mechanism like Basic Auth (opens new window), JWT, or others.
See this workflow (opens new window) for a Basic Auth example. This reads the username and password encoded in the
Authorization header and compares it to the expected values, returning a
401 Unauthorized error if auth fails.
This pattern is typical for protecting workflows: add the authentication logic in a step at the top of your workflow, ending early if auth fails. If auth succeeds, Pipedream runs the remaining steps of your workflow.
# Validate signatures for incoming events, where available
Many apps pass a signature with event data delivered via webhooks (or other push delivery systems). The signature is an opaque value computed from the incoming event data and a secret that only you and the app know. When you receive the event, you can validate the signature by computing it yourself and comparing it to the signature sent by the app. If the two values match, it verifies that the app sent the data, and not some third party.
Signatures are specific to the app sending the data, and the app should provide instructions for signature validation. Not all apps compute signatures, but when they do, you should always verify them.
When you use a Pipedream event source as your workflow trigger, Pipedream should verify the signature for you. You can always audit the code behind the event source to confirm this, and suggest further security improvements that you find.
See Stripe's signature docs (opens new window) for a real-world example. Pipedream's Stripe event source verifies this signature for you (opens new window).
# Audit code or packages you use within a workflow
Pipedream workflows are just code. Pipedream provides prebuilt triggers and actions that facilitate common use cases, but these are written and run as code within your workflow. You can examine and modify this code in any way you'd like.
This also means that you can audit the code for any triggers or actions you use in your workflow. We encourage this as a best practice. Even code authored by Pipedream can be improved, and if you notice a vulnerability or other issue, you can submit a patch or raise an issue in our GitHub repo (opens new window).
The same follows for npm (opens new window) packages. Before you use a new npm package in your workflow, review its page on npm and its repo, if available. Good packages should have recent updates. The package should have a healthy number of downloads and related activity (like GitHub stars), and the package author should be responsive to issues raised by the community. If you don't observe these signals, be wary of using the package in your workflow.
# Limit what you log and return from steps
Pipedream retains a limited history of event data and associated logs for event sources and workflows. But if you cannot log specific data in Pipedream for privacy / security reasons, or if you want to limit risk, remember that Pipedream only stores data returned from or logged in steps. Specifically, Pipedream will only store:
- The event data emitted from event sources, and any
consolelogs / errors
- The event data that triggers your workflow, any
consolelogs / errors, step exports, and any data included in error stack traces.
Variables stored in memory that aren't logged or returned from steps are not included in Pipedream logs. Since you can modify any code in your Pipedream workflow, if you want to limit what gets logged from a Pipedream action or other step, you can adjust the code accordingly, removing any logs or step exports.