Are Firebase security rules equivalent to allow/deny rules in meteor?

Security
1

Firebase’s security rules seem an awful lot like meteor’s allow/deny rules. I was wondering if they imply the same security risks that come with meteor’s allow/deny sytem.

2

What are the allow/deny security risks?

To me it couldn’t be simpler, you explicitly define who’s allowed to read/write any piece of data and everyone else is denied.

3
4

Tldr?
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