Hack history / 2017 / Hack or exploit
Youbit
Hack or exploit on Dec 19, 2017 · Hot Wallet Key Compromised
SOURCES AGREE ON DATE AND LOSS · 2 SOURCES
Lost
undisclosed
dollars at the time
Returned
none listed
as the sources state it
Rank
not ranked
collapses, frauds and later news are not ranked
What happened
On December 19, 2017, South Korean exchange Youbit suffered its second breach of the year, losing 17% of total assets (~3,831 BTC equivalent from the first hack in April). Attackers compromised the hot wallet; cold storage remained secure. Korean authorities attributed the attack to BlueNoroff, a Lazarus subgroup. The exchange permanently closed after this incident.
Details
- Date
- Dec 19, 2017
- Kind
- Hack or exploit
- Method
- Hot Wallet Key Compromised
- How in
- Keys, accounts and infrastructure
- Target
- Centralized exchange
- Chains
- Bitcoin
Reported by
Related incidents
Cite this page
SwanBluechip, "Youbit hack, Dec 19, 2017: undisclosed lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/htb70a048f39/ (data as of 2026-11-01).