This story is re-published from https://cybersecuritynews.com/meta-microsoft-claude-ai/ (it credits that source at the bottom) but with the internal links removed.

The cybersecuritynews.com news one simply republishes details of a story published by The Information. At least they have the decency to LINK to that Information story:

https://www.theinformation.com/articles/meta-microsoft-work-...

... and of course the Information story is behind a paywall.