Google Drive offers 15GB of free space to users, other upgraded storage plans offers more space but have a monthly subscription fee. In honor of Safer Internet Day, Google is giving away 2GB of permanent storage space to anyone who reviews the security settings of their Google account. This promotion is also valid for users who took advantage of the same offer last year.
Security settings that need to be reviewed include recovery information, connected devices, and app permissions. All you need to do is head over to security settings page, login to your account and verify your account information.
After you have gone through the checkup successfully, you will see three green checkboxes (see below) that confirm you are eligible for the free storage and, more importantly, that you have taken steps to enhance your online safety.