Nintendo has confirmed, via a statement to Reuters, that Nintendo of America's servers were breached. However, they also stated that no personal information was compromised during the breach.
"The server contained no consumer information. The protection of our customer information is our utmost priority," said the statement issued by a Nintendo spokesperson.
Hacker group Lulzsec claimed responsibility for the attack and stated that during their infiltration they managed to obtain a configuration file, but nothing else.