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Learning Security Basics with Typescript

Security & Governance

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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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312 learners

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.

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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From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

Learning Security Basics with Typescript

Trusted by learners working at top companies

Turn screen time into skills time

Join the 1M+ learners on CodeSignal

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