On April 14th 2017, The Club Penguin Rewritten database got breached by hackers. The attack might be coming from Virtual Penguin due to one reddit post made on the subreddit /r/ClubPenguin.
Mascots were also hacked during the attack. Down below shows a example of it.
The game was down for several days just to make some changes to ensure that this attack would not happen again in the future.
During the time the post was being made, Club Penguin Rewritten was down but it is now back up. It is recommended to change your passwords As Soon As Possible [ASAP].