A recent rash of emails to UVa users purports to come from your own account, as if it has been hacked, and demands payment in Bitcoin.
THESE ARE A HOAX.
Just delete them.
The scammer does NOT have control of your email, nor do they have incriminating videos. Because Internet email is an open protocol, the scammer can make it APPEAR as though the email came from you, to you. They can also make it appear as though they have control of your Sent mail folder. Again, this is a ruse.
You do not need to forward these scams (that usually start with "I have bad news for you") to IT-Security or Abuse.