Authentication security question determines whether or not to conditionally render

Seeking advice for my app that utilizes firebase authentication. I'm curious about the correct method for implementing conditional rendering based on the user's login status. If I were to use something along the lines of:

(conditionalboolean) ? render (<p>yes logged in</p>) : render (<p>not logged in</>)

I'm concerned whether sensitive data would still be downloaded to the user's browser and potentially visible through developer tools. I have been unable to find a clear answer to this dilemma. Any guidance on where to look next would be greatly appreciated.

Thank you! Matt

htmlcssreactjsfirebase

Answer №1

When content is shown or hidden in the browser, it must exist on the user's device before it can be concealed. This leaves it vulnerable to discovery by malicious users.

However, if the showing/hiding process takes place in server-side code, you can ensure that hidden content never reaches the user's browser at all. By preventing the content from being sent to the browser, there is no chance for users to uncover it there.

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