CSP

Understanding CSP (Content Security Policy)

What is CSP? Content Security Policy (CSP) is a web security standard that helps prevent various attacks, such as cross-site scripting (XSS) and data injection, by controlling which resources a web page can load. It acts as a whitelist of trusted sources defined by developers.

How It Works: CSP is implemented via HTTP headers or meta tags. When a browser loads a web page, it enforces the defined rules, allowing only the specified scripts, styles, or other resources. Any violation generates a report, enhancing visibility into potential attacks.

Why It Matters: By limiting the resources a website can load, CSP significantly reduces the risk of executing malicious code, making it a vital layer of defense in modern web applications.