Learning Security Basics with Typescript | CodeSignal Learn

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Learning Security Basics with Typescript

Application Security

4 courses

64 practices

4 hours

Learn core security principles in TypeScript by building a secure Pastebin app. Practice input validation, session management, authentication, RBAC, and JWT security to prevent real-world attacks and vulnerabilities.

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Earn a shareable

Certificate of Achievement

Verified skills you'll gain

INTERMEDIATE

Secure Coding Practices and Code Review

INTERMEDIATE

API and Web Services Security

Tools you'll use

Express.js

JWT

React

TypeScript

Trusted by learners working at top companies

Course 1

Secure Input Validation in Web Applications

5 lessons

16 practices

This course explores the importance of input validation and its role in web application security. Using TypeScript and Express.js, we will analyze client-side and server-side validation, common bypass techniques, and secure coding practices. The course follows an **offense-defense approach**, where we first explore vulnerabilities before implementing security solutions.

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Course 2

Session Management Security Basics

4 lessons

14 practices

This course covers the fundamental principles of **session management security** in web applications. You will learn how sessions work, their role in authentication, and the risks of improper session handling. The course follows an **offense-defense approach**, demonstrating common session attacks before implementing secure solutions.

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Course 3

Secure Authentication & Authorization

4 lessons

15 practices

This course provides a deep dive into **authentication and authorization** mechanisms in modern web applications. You will learn how to securely store passwords, implement role-based access control (RBAC), and protect against authentication attacks. The course follows an **offense-defense approach**, exposing vulnerabilities before applying secure coding practices.

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Course 4

JWT Security: Attacks & Defenses

4 lessons

19 practices

This course teaches how to secure JSON Web Tokens (JWTs) in web applications. You’ll learn about common JWT vulnerabilities, attack techniques, and best practices for safe authentication and token management, using an offense-defense approach with hands-on TypeScript examples.

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