Misplaced trust in the client by itself is a very general and broad topic. However, believe it or not, we already covered some aspects of this topic in the previous chapters.

Misplaced trust in the client generally means that if we, as developers, are overly trusting, especially in terms of how our JavaScript will run in the client or if there is any input from the users, we might just set ourselves up for security flaws.

In short, we cannot simply assume that the JavaScript code will run as intended.