Common Web Vulnerabilities (XSS, SQL Injection) Explained Simply

1️⃣ XSS (Cross-Site Scripting)

📌 What it is:
XSS happens when attackers inject malicious JavaScript into your website—usually through forms, input fields, or comments.

📌 Real-life example:
A hacker submits a <script> tag inside a comment box. When other users view the page, that script runs in their browser, allowing the hacker to steal cookies or login sessions.

📌 What XSS can cause:

• Stolen user data
• Fake popups
• Session hijacking
• Redirecting users to malicious pages

✅ How to prevent XSS:

• Sanitize and validate all input
• Escape output in HTML
• Use Content Security Policy (CSP)

2️⃣ SQL Injection (SQLi)

📌 What it is:
SQL Injection happens when attackers place malicious SQL commands into inputs—often login forms—that are not properly validated.

📌 Real-life example:
Login form expects:

SELECT * FROM users WHERE username='john' AND password='1234';

But the attacker types:

' OR 1=1 --

The query becomes:

SELECT * FROM users WHERE username='' OR 1=1 --' AND password='';

This always returns true, giving the attacker access.

📌 What SQLi can cause:

• Database leaks
• Deleted data
• Full system takeover

✅ How to prevent SQLi:

• Use Prepared Statements / Parameterized Queries
• Validate inputs
• Limit database permissions

🛡️ Quick Summary

✅ “Common Web Vulnerabilities (XSS, SQL Injection) Explained Simply”

🎨 Dark Cybersecurity / Tech Neon Infographic Style

(blue outlines, glowing padlock, terminal icons, clean bullet points)

📌 The infographic will contain:

• Title
• XSS (what it is, danger, prevention)
• SQL Injection (what it is, danger, prevention)
• Mini attack flow illustration
• Summary table (XSS vs SQLi)
• Cyber shield / lock icon background

📌 Image Format:

• 1080×1080 (perfect for Instagram, LinkedIn, Facebook, and X)
• PNG high quality
• Modern dark theme with tech neon accents

📌 Example Layout (for your visualization before I render):

 ------------------------------------------------
|      🛡️ COMMON WEB VULNERABILITIES (XSS, SQLi) |
|   ⚠️ XSS: Injected JS runs in user browser      |
|     → Steals cookies, hijacks sessions         |
|     ✅ Prevent: Sanitize Input, CSP, Escape     |
|                                                |
|   ⚠️ SQLi: Malicious SQL in input fields        |
|     → Database leaks & takeover                |
|     ✅ Prevent: Prepared Statements, Validate   |
|                                                |
|   XSS = Browser Attack | SQLi = Database Attack|
|        🛡️ Secure Coding = Safe Systems         |
 ------------------------------------------------
 (Dark theme, neon highlights, code icons)