@cwow2 (and also @matenov53):
I had the same problem; the answer is, that some time in your steem life you gave a posting authority. This is now used to vote. You can check your authorities here:
https://steemd.com/@cwow2, scroll down to authorities, and that is how it looks for you:

I would remove all authorities that you are not actively using. And then you should go and change your passwords!