I was wondering whether this is actually the same as like jacking. Is the ‘leak’ in that case the ability for the Facebook page/post owner to be able to then look you up in the list of ‘likes’? If so, I think Facebook privacy settings may allow users to not leak their emails or pictures in this case.

Also, I think it’s more widespread given that ‘Google identity’ covers a large number of Google products, and signing into one signs into all. With Facebook any time I log in nowadays I open incognito, check messages, log out, whereas with Google I generally stay logged in, mostly because I want gmail and my cross device browsing history to work.

To me Likejacking is more like harvesting organic likes. And YOLO leaks email address which is PII.

Do you get user's email from FB’s like button? (edit typo)