Bitfinex Update:
Some of you might have noticed that you're starting to receive emails from Bitfinex upon logging in. This is just another security setting that we have enabled. It shows you the IP and includes a link to freeze your account if you think that it is a suspicious login.
If you want to turn these notifications off, go to your Security Settings[1] page and click the "Disable login notification" checkbox.
We will be adding some more security settings soon and I'll be sure to keep everyone updated.