Nintendo has confirmed today what many had suspected, 160,000 Nintendo Accounts were accessed by third parties this month. Nintendo recently advised consumers via Twitter to start using two-factor authentication and at the same time reports had started coming in via social media that users accounts had been compromised.
Nintendo has said that these accounts were accessed via Nintendo Network IDs. The company has now disabled logging in to a Nintendo Account via Nintendo Network ID and has emailed those affected to ask them to change their password. Japanese Nintendo says that things such as nickname, date of birth, country / region, email address, and gender could all be affected. However, Nintendo says credit card information remains unaffected.