# Web Security: Attacks and Defenses Implementation Guide
> Learn about common web application vulnerabilities like SQLi, XSS, and CSRF, including demonstration cases and effective defense implementation strategies.

Tags: web-security, cybersecurity, sql-injection, cross-site-scripting, csrf-defense, vulnerability-assessment, secure-coding
## Web Security: Web Attacks and Defenses
*   **Objective:** Understand common vulnerabilities and implement security controls using the Damn Vulnerable Web Application (DVWA).

## Core Web Attacks Demonstrated
*   **SQL Injection (SQLi):** Malicious queries injected via input fields to manipulate databases and bypass authentication.
*   **Cross-Site Scripting (XSS):** Injecting JavaScript to execute in a victim's browser, leading to session hijacking.
*   **Cross-Site Request Forgery (CSRF):** Forcing authenticated users to perform unwanted actions without consent.

## Security Implementation & Defenses
*   **SQLi Prevention:** Use of strong input validation, prepared statements, and parameterized queries.
*   **XSS Mitigation:** Implementation of input sanitization, output encoding, and Content Security Policy (CSP).
*   **CSRF Defense:** Implementation of unique CSRF tokens, session validation, and SameSite cookies.

## Best Practices & Findings
*   **Strategic Measures:** Secure session management, HTTPS enforcement, and practicing the principle of least privilege.
*   **Key Finding:** Strict input handling is the most critical first line of defense against most web-based attacks.
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