Hi PeiPei,
BU stores all passwords in a secure SHA-256 hash method (The same as Main Clone, actually), and our database security has not been compromised during your time as a player here.
Our player's privacy and security is a top priority. Please change your password here in the event that you decide to return to play again (We just released a new update!)
I agree that for your security, you should always use different passwords for different services. If someone got your password somewhere else, they'd have it everywhere.
The cake is a lie.