This excerpt taken from the DCM 6-K filed Feb 14, 2005.
NTT DoCoMo Comments on Recent Leak of Customer Information
NTT DoCoMo, Inc. issued a comment today regarding the discovery that information including names, addresses, mobile/home phone numbers of 24,632 customers had been leaked.
DoCoMo has not yet confirmed the source of the leak, but a preliminary investigation points to two lists, one for customers who received service fee discounts following the earthquake in Niigata last October and the other for 3G FOMA® customers in the Kanto-Koshinetsu area who accessed NTT Communications Navi-dial service during data communications between December 1 and December 23 last year.
DoCoMo will continue with its investigation to positively identify the source(s) of the leak. Further announcements will be made as new information is confirmed. In the meantime, NTT DoCoMo will directly contact users whose information was leaked.
Once the problem is determined, the company intends to implement strict measures to ensure that such leaks do not reoccur. DoCoMo sincerely apologizes to all customers and anyone else who has been inconvenienced in any way by the leak.
For further inquiries, please contact:
Manager, International PR
Public Relations Department
NTT DoCoMo, Inc.
Tel: +81-3-5156-1366 (09:30 to 19:00, Japan Standard Time)
For Immediate Release