What is security.authtrampoline?

security.authtrampoline has an odd name, but it does a simple job in the macOS security system.

What is security.authtrampoline?

It is a helper process that runs privileged tasks after you have given your approval. The "trampoline" name comes from the idea of bouncing: it takes an approved request and bounces it into a context where the task can run with the right permissions.

How does it fit in?

The flow works like this:

1. An app asks for a privileged task
2. security.authhost shows you the password prompt
3. You enter your password
4. security.authtrampoline runs the task with the needed permissions

It is the final step that carries out the action after you have approved it.

When does it run?

Briefly, whenever a privileged task runs through the macOS authorisation system. It runs the tool or command that needed higher permissions, then stops.

Does it use many resources?

No. It runs only while the task is happening, then exits.

Should you worry?

No. It is a normal part of the macOS authorisation system. It makes sure privileged tasks only run after proper approval.

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