Facebook has recently released a tool where you can see all the data they receive about you from non-facebook sites that they link to your account. You can see it here. https://www.facebook.com/off_facebook_activity
I was a little shocked to see Monzo on the list have received hundreds of interactions. I don’t see what data Monzo has any business sharing with Facebook at all. Or how on earth they have linked it back to my Facebook account as they use separate email addresses.
Can we have some transparency from Monzo about what is shared with Facebook and why?