Cross-Site Scripting (XSS) is a type of attack where a website is used as a means to target its users by exploiting insecure handling of user input. In this tutorial, we will explore how XSS attacks work and discuss preventive measures. What is XSS? XSS refers to a security vulnerability that allows attackers to inject malicious JavaScript code into a website, which is then executed by users’ browsers without their knowledge or consent....
In this blog post, we will learn how to validate input data in your Express endpoints using the express-validator package. Specifically, we will look at how to validate the name, email, and age parameters in a POST endpoint. Let’s start by setting up our Express server and configuring it to parse incoming JSON data: const express = require('express'); const { check, validationResult } = require('express-validator'); const app = express(); app.use(express.json()); Next, let’s define our POST endpoint and perform validation on the input data:...