Invited to spark beta?

I don't know much about e-fraud/hacking so someone will probably contradict me, but I can't see how someone sending you an invite could allow them access to any personal information linked with your e-mail account.
 
They have been sending out legit beta codes this past week.

Why do you think yours was sent illegally?
 
If it was sent from an Ethiopian prince, then yes it's legit.