Yeah, NPM should be enforcing 2FA and likely phishing resistant 2FA for some packages/ this should be a real control, issuing public audit events for email address changes, and publish events should include information how it was published (trusted publishing, manual publish, etc).

One wonders if Microsoft/npm.js should allow new packages to be published immediately following an account email address change? I mean changes to email address are already recognized as potential attack vectors, so emails are sent to the old address warning of potential account take over. But this seems to have been done at night, so the warning email would not be seen yet. Even so a new package could be published and served to the world immediately. Unless I misunderstand something about the facts this would indicate an extreme lack of imagination in the people at Microsoft who already went through several cycles of hardening the service against supply chain poisoning attacks.

Well, that sucks! It’ll be interesting to learn how they obtained a valid second factor or 2FA bypass; that will inform the next round of defenses here.