Google: if you use Gmail accounts, through a desktop or laptop (not your smartphone) you can go into google and put in privacy alerts, update your settings and change your passwords regularly.
Get to the settings page (all links and bullet points below are from Google)
- On your computer, open Gmail.
- In the top right, click Settings.
- Choose one of the tabs at the top of the page, such as General, Labels, or Accounts and Import or Accounts.
- When you’re done updating your settings, click Save Changes at the bottom of the page
How do you make a Gmail account private?