WhatsApp says its web interface is growing increasingly popular.
Image: Meta

Code Verify is a new browser extension from Meta that aims to improve the security of the web version of the messaging service. The extension can be used to verify that the contents of the web version of the messaging service have not been tampered with. The aim is to make it harder for a would-be attacker to compromise the data or the privacy of the service when using the browser-based version.

The extension was launched last year. This will make it easier to use the messaging service from other devices than your primary phone. Since the feature's launch, it has seen an increase in people accessing its service through web browsers, which presents new security challenges compared to an app.

A diagram of Code Verify’s steps.
Image: Meta

There is nothing new about the security methods underpinning Code Verify. It is only comparing a hash of the code running in your browser with the one held by Cloudflare. It is easy to understand and use regardless of technical knowhow because of its value inAutomating this process.

The browser extension uses a traffic light system to show you if there are any issues. You might need to refresh your page if you have a separate browser extension interfering with Code Verify. The extension will be able to help users solve the problem, according to the help page.

Meta says the extension isn't able to read or access your messages, and no data is sent to Cloudflare. The source code for Code Verify has been released by Meta, which will allow other websites to use its security features. The extension is available for both browsers, and Meta says that a version of Firefox is coming soon.