Today (or yesterday, depending on where you're geographically located) is Safer Internet Day: an annual event where people are encouraged to learn and teach others about staying safe online. Primarily backed by the European Union, the event also includes various workshops that teach people about online security.
Google is participating in the event this year and has produced a security checkup dashboard for those who are curious about their security on Google services. The dashboard goes over various bits and pieces of your Google account's security including recovery information (setting up a secondary email and tying a phone number to your account), account permissions (seeing which apps, devices and services have access to your Google account) and recent activity monitoring.
To encourage people to use the service, Google is offering 2 GB of free Drive storage for everyone who performs the security checkup before February 17th, or just under a week from now. There is one caveat, though: Google Apps users (such as those who have a Google email for work or school) are not eligible for the 2 GB. Everyone else, regardless of where you live or how long you've had an account, is.
The Google security checkup dashboard can be accessed here and if you're eligible and do the checkup before the 17th, the extra 2 GB storage will be applied to your Google Drive account on the 28th of this month.
Source: Google Drive blog