Content Security Policy: Mitigating Web Vulnerabilities…

## Executive summary This article explains Content Security Policy (CSP) best practices and examples—covering default and specific directives, nonces and hashes for inline scripts, connect/img restrictions to limit exfiltration, frame-ancestors/form-action to prevent clickjacking and fraudulent forms, and report-only testing—emphasizing that CSP is a mitigation layer that complements fixing underlying vulnerabilities and should be tested across supported browsers.