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Mozilla has announced that some add-ons may be blocked from running on certain sites as part of a new feature called Quarantined Domains.

“We have introduced a new back-end feature to only allow some extensions monitored by Mozilla to run on specific websites for various reasons, including security concerns,” the company said in its Release Notes for Firefox 115.0 shipped last week.

The company said the openness afforded by the add-on ecosystem could be exploited by malicious actors to their advantage.

“This feature allows us to prevent attacks by malicious actors targeting specific domains when we have reason to believe there may be malicious add-ons we have not yet discovered,” Mozilla said in a separate support document.

images from Hacker News