WASEC: Web Application Security for the everyday software engineer

Most web developers want to build great features, not spend hours worrying about obscure security headers or cookie flags. Yet the web is full of subtle pitfalls that can expose user data, degrade trust, and turn a beautiful application into a liability. WASEC cuts through the noise with a focused, practical tour of the security concepts that matter most for modern web applications.

Alessandro Nadalin wrote this book specifically for everyday software engineers—people who write real code, ship features, and may not have dedicated security teams. Rather than drowning you in theory, WASEC walks through the browser’s security model, the HTTP protocol, and the headers that control how your app behaves in the wild. You’ll learn why HTTPS is essential, how to set cookies so they can’t be stolen or abused, and what attackers actually look for when they probe your site.

What’s Inside 🔐

• Browser mechanics—understand what a browser does, how it interprets HTML, and why that matters for security.
• HTTP, HTTPS, and H2—see the protocol differences and why HTTPS everywhere is a non-negotiable baseline.
• Security headers—learn how X-Frame-Options, Content-Security-Policy, and other headers stop attacks like clickjacking and XSS.
• Cookies and sessions—manage state securely with the right flags, and avoid common session hijacking pitfalls.
• Practical threats—explore SQL injection, DDoS attacks, and bug bounty programs, with realistic advice on defense.

Written for Real Developers 💻

You don’t need to be a security researcher to benefit. If you know basic HTML and JavaScript, you’re ready. The explanations stay approachable without skipping essential details, so students, non-web engineers, and curious developers can all follow along. The focus is always on making your applications safer with clear, actionable steps.

Whether you’re building your first production app or hardening an existing codebase, WASEC gives you a reliable mental model for web security. No doom-scrolling, no endless acronym soup—just the essentials you can apply immediately.

Add this ebook to your digital library and start writing code that’s secure by design.