Picto thématique

Rule n° 209 - Integrity control of third party resources is present and valid.

It is possible to verify that the third-party resources (files scripts, style sheets ...) have not been modified to insert malicious code. For this, the web client (browser in particular) will continuously check the sent files are the correct files. This rule encourages the implementation of this security measure.

#Security #Development

Goal

  • Prevent the appearance of malicious content or scripts on the site

Implementation

Use the integrity attribute of each link and script element (calling an external file) to provide the browser with the cryptographic hash (SRI hash) that should correspond with the file.

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Control

Check for each link and script element (calling an external file) that the integrity attribute indicating the cryptographic hash (SRI hash) is present that should correspond with the file.

By Opquast - Read the license

Overview and background

The 240 Opquast rules are defined and agreed upon by an extensive community of web professionals and academics. These web quality assurance guidance rules started as a list of best practices 20 years ago. They have since been revised every five years and have been tried and tested via millions of web interactions by Opquast community’s customers, including the leading CMS communities which have developed plugins for WordPress, Drupal and Prestashop. The most recent version, v4, was established in 2020.

Each rule has individual technical sheets and the rules can be searched by project phase or various topics: e-commerce, data-privacy, internationalization, security, code, etc, or by themes: accessibility, SEO, mobile, privacy, and ecodesign. The complete checklist is available on a creative commons license BY-SA.

To learn more about the Opquast approach, read this article published at Smashing Magazine

Broad 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.

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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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