From so long I feel hackers may choose our gmail account to hack our bitcoin account

Reasons behind we even use gmail for bitcoin authentication along with mobile.
Without subscribing we even get plenty of marketing e-mails - I feel t's time we should be cautions to unsubscribe even such to get safe from hacking threats.
Also we choose mobile for authentication of our bitcoin accounts so it's also to safer hiding mobile SMS notifications on phone screen and set certain pattern locks/codes. Our safety is in our hands.
Your idea/thought/feeling/recommendation does adds value to my thought.