I have evidence that someone has been accessing my Google account since I started to login to use a variety of services. I did not have this problem when I was using my Google account exclusively for Gmail.
I also try not to accept the "keep me signed in option," but it remains enabled no matter how often I change my password. I feel I have no privacy at all so I want to go back to using only Gmail.
How do I do this without seeing the Google logo whenever I sign in to my account?