hill in washington for us tonight michelle thank you very much. well facebook have started notifying its users whether their personal data was shared with that data mining company cambridge analytics says eighty seven million people were affected worldwide most of them in the u.s. that's a lot of people that are a little. cold as it is here from our social media desk i haven't received a notification from facebook but i was looking just before we went on the air all of a sudden all of these people start saying oh my god i got a notification or i was told that friends had played this game in a good notified so why have why have some been notified others have it it's just rolling out slower than we thought and i don't know why facebook hasn't told anybody why some users have gotten these notifications others haven't if you have not gotten a notification neither of us have there is a simple way if your impatience to find out if your data was in fact shared with cambridge analytic here's what you can do logon to facebook click on that question