If you're one of the hundreds of millions of people playing Pokemon Go on your iPhone and you set it up using your Gmail account, be aware that you now have a huge security vulnerability:
Let me be clear - Pokemon Go and Niantic can now:
* Read all your email
* Send email as you
* Access all your Google drive documents (including deleting them)
* Look at your search history and your Maps navigation history
* Access any private photos you may store in Google Photos
* And a whole lot more
What’s more, given the use of email as an authentication mechanism (think “Forgot password” links) they now have a pretty good chance of gaining access to your accounts on other sites too.
That isn't to say that something will happen to you, but it could. So you should weigh whether continuing to play the game at this point is worth potentially having this happen to you.