Where can I find information on how to properly protect the node.js server from replacing data from the client?

Question

JavaScript

Where can I find information on how to properly protect the node.js server from replacing data from the client?
Are there such books or how to drive in a search engine to find exactly what I need?

Answer 1

Data from the client should always be strictly validated and filtered. The rule is simple, never trust a client. In any client-server system, it is always unknown who is on the other end of the wire. You don't need to protect the server from replacing client data. The server should not care if the client is real or fake, in any case it should only return what was asked of it and should not process incorrect requests.

Answer 2

what do you mean by that? situation example

Answer 3

Validate all data on the server side