I tried to log in to my Udemy account today, only to find out I was unable to log in. I kept using the password reset option, but would not receive the reset email from Udemy. Finally, I gave up on trying. Fast forward 8 hours later I contacted Udemy chat support to find out what's going on and realized someone got access to my Udemy account. Not only did they change the login email, but also changed the payout settings PayPal email.
The most Effed up part about all of this, for the millions of $$$$$$ udemy makes, they DO NOT HAVE 2FA.
These are the emails associated with Hackers. Instructors - Beware!