said by Doctor Olds:
It really, really smells of site redirection.
IMHO I could see site redir if it happened when clicking on the Rogers link but getting the popup after entering the secure "MyAccount" says hack/bot to me..........could be wrong, anything is possible. But there's a lot at stake here security wise.
The OP hasn't stated if this now happens every time he enters the Rogers site and logs in or if this was a one time occurrence.