Online game company Blizzard Entertainment Inc. says there was unauthorized access to some Battle.net account information, but Chinese players appear unmolested.

Blizzard says the unauthorized access included email addresses associated with Battle.net accounts in all regions, outside of China. Additional information from accounts associated with the North American servers was also accessed, including cryptographically scrambled versions of passwords, the answer to a personal security question, and information relating to mobile and dial-in authenticators. Those North American servers generally include players from North America, Latin America, Australia, New Zealand, and Southeast Asia.

Blizzard says it does not believe this information alone is enough to gain access to Battle.net accounts.

Investigations are ongoing and Blizzard says it continues to work with authorities and security experts.