The free online Data Discovery Portal from F-Secure shows you what personal information you have given to tech-giant free services Facebook, Google, Amazon, Snapchat, Twitter and Apple over the years.
If you visit https://data-discovery-portal.f-secure.com/en/ and click on the logo of each of those companies you will be taken straight to the page where you can download a copy of the information that they have collected about you (Apple requires a login). With Amazon, for example, you can even discover the way to review, listen to, and delete any voice recordings associated with your account.
The F-Secure Data Discovery Portal is, therefore, one easy way in which you can take steps to protect your identity and guard your personal data going forward.