The Fallen Earth team has taken to Twitter to let players and fans know that the login server has been shut down due to a series of DDoS attacks. No further information has been released or any indication that servers are back up at this point. We'll keep you posted as the story develops.
Due to malicious attacks we are locking the login server until it subsides. More information posted soon.— Fallen Earth (@FallenEarth) February 18, 2014
Thanks to Darkholme for the tip!