Security Best Practices for APIs

Workato Callable recipes as APIs are a powerful feature that allows access to Workato functionality from other recipes as well as from sources external to Workato. But, since recipes can perform operations on your business sytesms, it is important to avoid unauthorized access to them through APIs. Following are some recommendations for maintaining security when using APIs:

1) Treat API tokens like a password. They are confidential information that can grant access to your API to anyone who possess them. As a best practice, don't distribute them to clients through insecure channels such as email. Use a secure messaging system, or a document system such as Dropbox to which both API owner and the intended client have access.

2) Consider distributing a JWT token encapsulating the Auth Token secret instead of the secret itself. JWT tokens are signed, include the client identity and can have an expiration.

3) Don't distribute the same API token to multiple persons. An API token identifies a client and enables monitoring requests in the API dashboard on a per-client basis. If multiple people have the same API key, there is no ready way to determine who is making calls to your API.

4) Consider having a policy to periodically refresh API tokens. This is similar to expiring a password and ensures that any compromise of an API token does not provide very long-term access to systems. Alternatively, distribute a JWT token with an expiration time set ("exp" claim). This will give the token a limited lifetime.

5) Use IP whitelisting (part of the Access Profile for a client) to restrict the originating IPs that are allowed to have API access. A whitelist is a best practice from a security perspective. However, some clients may not have a fixed IP address (for example, clients connected from a home network may get varied IPs from their providers), or may connect from multiple IP addresss (for example, while traveling). In this case it may not be readily possible to whitelist their IPs.

6) If a person should no longer have access to APIs (for example, because they are leaving employment), ensure that person's client profile is disabled or deleted in Workato.

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