Picto thématique

Rule n° 205 - The server sends activation information for protection against cross-site scripting.

Cross-site scripting is an attack that consists of injecting and executing malicious content on a page. Some browsers have built-in filtering mechanisms to protect against certain types of these attacks, mechanisms that can unfortunately be disabled. In order to prevent your site from putting users at risk, it is therefore advisable to force the presence of the protection header and to play it safe for the visitor by blocking all the content of the page.

#Security #Development


  • Reduce the risk of downloading dangerous hidden content.


Configure the server to send the X-XSS-Protection HTTP header with the value 1



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Business application and benefits

The rules should be applied to your projects from the design phase through to post-implementation , and they should be understood by all professionals with web and customer experience (CX) responsibilities: from strategy to operations, marketers to project managers, and editorial to technical staff. The benefits of using this ruleset are numerous, including improving customer satisfaction, web performance, and e-commerce, and expanding your client base, while also decreasing your errors and costs.

Multidisciplinary verticles - accessiiblity, SEO, e-commerce, ecodesign etc..- starting from the foundational Opquast base.

The objective of these rules and the Opquast community mission is ‘making the web better’ for your customers and for everyone! Opquast rules cover the key major areas of risk that can negatively affect website users such as privacy, ecodesign, accessibility and security.

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