Why Your Website Needs a Content Security Policy (CSP) Header

Did you know that over 60% of cyber attacks exploit weak or missing security headers? One of the most crucial headers to protect your website is Content Security Policy (CSP).

🔹 What is CSP?

CSP is a security feature that helps prevent Cross-Site Scripting (XSS), code injection, and data theft by controlling which scripts, styles, and resources can load on your site.

🔥 Why is CSP Important?

✅ Blocks Malicious Scripts – Stops attackers from injecting harmful JavaScript.

✅ Prevents Data Theft – Mitigates attacks that steal user credentials via phishing.

✅ Secures Third-Party Integrations – Limits external scripts to trusted sources.

✅ Reduces Attack Surface – Strengthens security beyond firewalls & SSL.

⚡ Example of a Secure CSP Header

Content-Security-Policy: default-src 'self'; script-src 'self' https://trusted-source.com; style-src 'self' 'unsafe-inline'; object-src 'none';

This setup:

🔹 Allows scripts only from your site & trusted sources

🔹 Prevents malicious inline JavaScript execution

🔹 Blocks insecure Flash & object embeds

🔍 How to Implement CSP

1️⃣ Add it to your web server headers (Apache, Nginx, etc.).

2️⃣ Use Content-Security-Policy-Report-Only to test before enforcing.

3️⃣ Continuously refine policies using CSP violation reports.

A well-implemented CSP is your first line of defense against modern web threats. Is your website protected?

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