Implementing Content Security Policy in Rails: A Guide for Developers

2023/08/09

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This article provides a comprehensive guide on how to implement content security policy (CSP) in Rails applications to protect against cross-site scripting (XSS) vulnerabilities. The author explains the importance of CSP in preventing inline scripts and styles, and provides a step-by-step tutorial on how to set up CSP in a Rails application using the Content-Security-Policy header. The article highlights the convenience of Rails' Content Security Policy API, which allows developers to create the CSP header in a more elegant manner using a custom DSL. The author also discusses the option of reporting CSP violations without enforcing the policy, which can be useful when dealing with legacy code or unknown JavaScript sources. Overall, this article is a valuable resource for developers looking to enhance the security of their Rails applications.