MapleStory Universe halts service after off-chain server breach
Operators said wallet addresses, nicknames and 328 Builder Center applications were exposed; no crypto assets were confirmed stolen.
The operators of MapleStory Universe confirmed unauthorized external access to part of their off-chain server infrastructure and placed the full service into emergency maintenance from 13:43 KST on November 12, according to techm.kr.
Exposed records include those created after 08:26 KST on November 5: wallet addresses, nicknames, profile images, sign-up and last login times, and connection country and city. Login times, IP addresses, device and browser information, and session keys were also exposed, along with the first 12 characters of email addresses, linked social account details such as Discord, token transfer and market transaction records, and in-game item and currency change histories.
Separately, information on 328 applications registered in the MapleStory Universe Builder Center was exposed, including developer wallet addresses, nicknames, API keys and OAuth client IDs. The operators said real names, phone numbers, physical addresses, KYC information and payment card information were not found in the leaked records.
No theft of crypto assets was confirmed, and no assets were moved or stolen, according to the operators. User wallet private keys are not stored on company servers, and service operating private keys were kept encrypted.
The access path used in the attack has been blocked, compromised credentials were revoked, the breached server was replaced, and operating private keys will be fully replaced before service resumes. Users were advised to watch for phishing attacks; the operators said users do not need to change wallets or move assets.
Service resumption and in-game compensation
Service resumption was initially expected around 04:00 KST on November 13 but may change depending on the security review. Entry to Chaos Gloom was temporarily restricted, and daily boss entry counts deducted during the outage were restored. Compensation for the maintenance will be provided separately.
Quick answers
When will MapleStory Universe service resume?
Resumption was initially expected around 04:00 KST on November 13, but the operators said the timing may change depending on the security review.
Do users need to move their assets or change wallets?
The operators said users do not need to change wallets or move assets, and advised them to watch for phishing attacks.