Thank you for the warning, Hawk.
I have changed my email name and password, as this has happened to me. I was unaware until I checked my mail and had a few dozen messages from postmaster for undelivered mail.
I have been in Hospital while this occured, so nowhere near my computer. Never thought anyone would be interested in my account. There is nothing worth stealing. I have no secrets and hardly post mail. Now I will be double careful and never open links again.
Erica