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content-security-policy

Safeguard articles tagged "content-security-policy" — guides, analysis, and best practices for software supply chain and application security.

8 articles

Application Security

A practical guide to HTTP security headers: CSP, HSTS, and beyond

A misconfigured checkout page let attackers skim 380,000+ card payments from British Airways in 2018. Here's how CSP, HSTS, and frame-ancestors actually stop attacks like that.

Jul 13, 20266 min read
Application Security

Preventing XSS in Java Spring and JSP applications

OWASP folded XSS into A03:2021-Injection, present in ~3.37% of tested apps — raw JSP EL output and a missing CSP header are still the two most common causes.

Jul 13, 20266 min read
Vulnerability Analysis

What is Clickjacking

Clickjacking tricks users into clicking hidden UI via invisible iframes. Learn how it works, real incidents, key CVEs, and how to defend against it.

Mar 27, 20266 min read
AppSec

An XSS Example That Explains How Cross-Site Scripting Works

A clear XSS example shows how unescaped user input becomes executable script in a victim's browser, and why output encoding and CSP are the fixes that hold.

Oct 7, 20257 min read
AppSec

XSS Tutorial: How Cross-Site Scripting Works and How to Stop It

A defender's XSS tutorial covering the three attack types, why they still slip through, and the encoding and CSP controls that actually prevent them.

May 22, 20256 min read
Security

What Is a Cross-Site Scripting Vulnerability, and How Do You Fix It?

A cross-site scripting vulnerability lets an attacker run their JavaScript in your users' browsers, and you fix it by encoding output and validating input at the right boundaries.

May 8, 20256 min read
Security

CSP Meaning in Security: What Content Security Policy Actually Does

CSP in security stands for Content Security Policy, a browser mechanism that tells the page which sources of script, style, and other content it may trust. Here is what it means and how to use it.

May 6, 20255 min read
Application Security

CSP Bypass Techniques and Prevention: Beyond the Basics

Content Security Policy is the strongest browser-side defense against XSS. But most CSP deployments are bypassable. Here is why, and how to fix it.

Jan 12, 20235 min read

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content-security-policy — Safeguard Blog