Race Condition

Race condition refers to a situation that can prevent a program from working correctly and cause security vulnerabilities. This occurs when two or more processes attempt to access the same resources at the same time, where this access occurs in a sequential or uncontrolled manner, which may result in unexpected errors or vulnerabilities.

https://portswigger.net/web-security/race-conditions

Race Condition in the registration form

Security measures say that an account can be opened with an email :)

Discount Code Application in Shopping Cart

This lab demonstrates the implementation of a discount code feature in a shopping cart system. Users can enter a valid discount code during checkout to receive a discount on their total purchase amount.