Do not simply READ docs or ask ChatGPT

Use ⏰ 1-HOUR STARTER KIT to:

🛡️ Practically examine all the nitty gritty of Same-Origin Policy - the most important Web security principle

⚠️ WHY IT MATTERS: The Same-Origin Policy (SOP) was introduced to web browsers in the early 1990s as a fundamental security mechanism to prevent some of the potential risks that arise when different websites interact with each other. It was implemented to restrict how a script loaded from one origin (scheme, hostname, and port) can interact with resources from another origin.

🛡️ Find out the reason behind CORS errors (yes, yes - this infamous No Access Control Allow Origin headers is present error!).

⚠️ WHY IT MATTERS: Cross-Origin Resource Sharing (CORS) was introduced to browsers as a method to enable controlled access to resources located outside of a given domain. Before CORS, the Same-Origin Policy restricted web pages from making requests to a different domain than the one that served the web page, as a security measure to prevent malicious scripts from interacting with data.

🛡️ Build a robust Content Security Policy against cross-site scripting attacks (XSS)

⚠️ WHY IT MATTERS: Cross-site scripting can steal cookies, hijack sessions, impersonate users, perform complete website defacement, execute phishing attacks, and much more harm. It is essential to understand how a properly implemented Content Security Policy reduces the risk of XSS to the minimum.

🛡️ Set up reporting features to catch attack attempts (security violations)

⚠️ WHY IT MATTERS: Content Security Policy (CSP) includes a powerful feature known as "reporting," which plays a critical role in monitoring and enhancing the security of a web application. CSP reporting allows website administrators to receive reports about violations of the defined CSP. This feature is crucial as it provides real-time feedback on policy violations.

🛡️ Create integrity checks on external scripts (minimize the risk of deadly XSS!)

⚠️ WHY IT MATTERS: Subresource Integrity (SRI) is a security feature that enables browsers to verify that resources they fetch (such as JavaScript and CSS files) are delivered without unexpected manipulation. It's a crucial part of ensuring web security, particularly when including third-party resources like libraries or scripts from external servers like CDNs.

In the BONUS SECTIONS:

✔️ Learn how JSON Web Tokens (JWT) can be hacked (this will LITERALLY blow your mind) 🤯🤯🤯

✔️ Understand how time-based one-time passwords (TOTP) work for 2-factor authentication 🔑

✔️ Receive a comprehensive deep-dive into OWASP Top 10 security vulnerabilities 📝

✔️ Access the exclusive Discord community of security-oriented Web developers 👩‍💻

✔️ Receive a PDF certificate with your name on it 📜

MY SECRET FORMULA 🧪

✔️ 7 must-know steps to making modern Web applications as secure as medieval strongholds! ⚔️

In-depth guide you can't generate with ChatGPT ❌

1. Understand the Web security model (this Starter Kit!)
2. Prevent common security vulnerabilities
3. Choose a proper authorization architecture
4. Cookies or JWT
5. Stateless or stateful
6. Implement a secure role-based authorization
7. Add additional layers of security
8. Use different levels of logging
9. Test application security