I enrolled in a certificate course by an instructor that calls himself AIGPE or Advanced Innovation Group Pro Excellence. At the end I discovered I had to give him (a person I do not know and probably is in India) a lot of personal information so he could make my certificate. Ever since my mailbox is flooded with all kind of money scams. My personal data seems to now be circulating in many shady networks. I contacted Udemy to complain, but no action was taken. I think they are just happy they sell courses. Be careful.