OMG WTF!!!!

I got this email from UDEMY. I've copied and pasted it in. I need the author to explain ASAP......I never had this issue with the other program

Dave Arnold security@udemy.com via sendgrid.net
3:36 AM (39 minutes ago)

to security
Hello,


we have been informed you using a udemy download tool. This tool ist illegal, please stop using this. If you still use this tool, we will take legal actions against you.

Best regards, Dave Arnold

Udemy.com 600 Harrison St., 3rd Floor San Francisco, CA 94107 USA