It is vital that you have a 2-step verification process for all online accounts. We've learnt it the hard way by losing ownership of our YT channel. @TeamYouTube is helping us retrieve our channel even as we write this. So, fingers crossed.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more