# Trustworthy JavaScript for the Open Web

DevFeed: [Trustworthy JavaScript for the Open Web](<https://devfeed.tech/articles/trustworthy-javascript-for-the-open-web-4151.md>)

Original publisher: [Read original article](<https://hacks.mozilla.org/2026/05/trustworthy-javascript-for-the-open-web/>)

Author: Firefox Security Team

Published: 2026-05-05T15:49:11Z

Content type: article

Language: en

Sources: [Mozilla Hacks - the Web developer blog](<https://devfeed.tech/sources/mozilla-hacks-the-web-developer-blog.md>)

Topics: [JavaScript](<https://devfeed.tech/topics/javascript.md>), [Web platform](<https://devfeed.tech/topics/web-platform.md>), [web applications](<https://devfeed.tech/topics/web-applications.md>), [browsers](<https://devfeed.tech/topics/browsers.md>), [End-to-End Encryption](<https://devfeed.tech/topics/end-to-end-encryption.md>), [Encryption](<https://devfeed.tech/topics/encryption.md>), [Security](<https://devfeed.tech/topics/security.md>), [Firefox Nightly](<https://devfeed.tech/topics/firefox-nightly.md>), [Cloudflare](<https://devfeed.tech/topics/cloudflare.md>)

Tags: [applications](<https://devfeed.tech/tags/applications.md>), [browsers](<https://devfeed.tech/tags/browsers.md>), [cloudflare](<https://devfeed.tech/tags/cloudflare.md>), [encryption](<https://devfeed.tech/tags/encryption.md>), [firefox](<https://devfeed.tech/tags/firefox.md>), [firefox-nightly](<https://devfeed.tech/tags/firefox-nightly.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [meta](<https://devfeed.tech/tags/meta.md>), [open](<https://devfeed.tech/tags/open.md>), [security](<https://devfeed.tech/tags/security.md>), [web](<https://devfeed.tech/tags/web.md>), [web-platform](<https://devfeed.tech/tags/web-platform.md>)

## AI overview

Mozilla presents WAICT, a web platform proposal for making client-side JavaScript more trustworthy when servers may be malicious or compromised. It binds delivered code to a developer-supplied manifest, records manifests in a publicly auditable log, and enables browsers to reject code that has not been logged. An early prototype is available behind a preference in Firefox Nightly.

## Source excerpt

The open web is a critical platform for applications that handle highly sensitive data, from private communications to financial transactions and medical records. Traditionally, servers are trusted to deliver the appropriate code and resources for their web applications to browsers, who then provide a secure and isolated environment for their execution. In some circumstances, this [...] The post Trustworthy JavaScript for the Open Web appeared first on Mozilla Hacks - the Web developer blog.