09-09-2012, 05:46 AM
A recent exploit was discovered in the Minecraft authorization servers, which allowed players to log in to SMP servers as any account they wished. Mojang temporarily took down the login servers, and have successfully eliminated this exploit.
Minecraft forum Wrote:It is not believed at this time that any account information - such as passwords, security info or any other sensitive information - was compromised. Players are, as in any similar situation, encouraged to change their password when the authorization servers come online, if they feel their information was compromised.