Stop the vulnerabilities that actually get apps hacked — XSS, CSRF, injection, auth, and secrets.
Web DevelopmentPDF · 6 pages· v1.0
4.4Most real-world breaches come from a short list of well-understood mistakes, not exotic attacks. This guide teaches that short list and exactly how to prevent each one in your code. It walks through the vulnerabilities that consistently top security reports — injection (including SQL injection), cross-site scripting (XSS), cross-site request forgery (CSRF), broken authentication and session handling, insecure direct object references / broken access control, and leaked secrets. For each, it shows how the attack works, a concrete vulnerable example, and the defensive pattern that closes it. It also covers the defenses that apply broadly: validating input, encoding output, hashing passwords correctly, setting secure cookies, security headers including a Content Security Policy, and keeping dependencies patched. The goal is not to make you a security researcher — it is to make sure your app does not fall to the attacks that take down ordinary apps every day. After reading you will be able to review your own code for these issues, parameterize your queries, escape your output, protect state-changing requests, store credentials safely, enforce access control on every request, and stop committing secrets. Who it is for: backend and full-stack developers who ship user-facing apps and want a practical, accurate security baseline without wading through an entire security textbook.
No. It is written for application developers. Each vulnerability is explained from scratch with a vulnerable example and the fix you apply in normal app code.
The principles are universal and the examples are written to read clearly in any stack. Where a defense depends on a library (like a password hasher), the guide names the right category and reputable options.
No app is unhackable, and the guide is honest about that. But these defenses stop the overwhelming majority of attacks that actually succeed against ordinary apps.
Yes. It explains why you hash (never encrypt or store plaintext), which algorithms are appropriate (bcrypt/argon2/scrypt), and why salting and a slow hash matter.
Read the full refund policy and trust & safety terms.