Recently I've been coming back to my chrome browsers to find a tab open with the following URL:
(link disabled to prevent giving them any more clicks)

https ://theaisecrets.beehiiv.com/p/chatgpt-can-now-work-docs-apps-websites-emails

This is happening across all my computers, both linux, windows, and linux VM, so I don't think it's OS-specific malware, but I suspect a rogue chrome extension is opening the tab, because I have chrome synced across all affected devices via my google account.

I've searched for this particular problem and URL to no avail, so I wondered if there's a way to track back which extension opened the tab, other than by doing a binary search disabling half my extensions at a time (which would be annoying as hell - the tabs only seem to get opened once a day or so).