TLDR
Upbit halted Solana (SOL) withdrawals after detecting unauthorized transfers from its Solana hot wallet, roughly 54 billion KRW (about $3738.5 million), and paused Solana network deposits and withdrawals while it secured funds and audited systems Yahoo Finance.
- Scale and scope. About 54 billion KRW across multiple Solana tokens including SOL, USDC, BONK, and JUP Bloomberg.
- Immediate actions. Assets moved to cold wallets, some funds frozen, and a pledge to fully reimburse users crypto.news.
- Cause context. Indicators point to a breach of Upbits wallet infrastructure, not a Solana protocol failure crypto.news.
Deep Dive
1. What Happened
Upbit flagged abnormal withdrawals tied to its Solana hot wallet and halted Solana network deposits and withdrawals. Reports cite approximately 54 billion KRW moved to external wallets across a range of Solana ecosystem tokens such as SOL, USDC, BONK, and JUP Bloomberg. Coverage notes the exchange posted urgent updates as it investigated the outflows and contained risk Yahoo Finance.
The pause on SOL withdrawals was a containment step after a suspected wallet breach affecting Solana-based assets.
2. Exchange Response
Upbit transferred assets to cold storage, initiated systemwide security reviews, and coordinated freezes of affected tokens. It said it would fully cover user losses from its own holdings and resume services sequentially after checks Yahoo Finance. Reporting adds that some funds, including LAYER, were frozen on chain during the response while forensics continued crypto.news.
If you hold SOL on Upbit, the halt targets risk control. Asset safety measures and reimbursement commitments were stated while systems are audited.
3. Cause Context
Early reporting points to an Upbit wallet infrastructure compromise, not a Solana network issue, with suspicious transactions originating from Upbits Solana hot wallet crypto.news. Multiple outlets framed the move as a standard security response to limit further unauthorized movements Yahoo Finance.
The Solana chain itself continued operating normally. The withdrawal halt was specific to Upbits environment to protect customer funds.
Conclusion
SOL withdrawals on Upbit were halted because the exchange detected unauthorized outflows from its Solana hot wallet and paused Solana network activity to secure funds and audit systems. Upbit moved assets to cold storage, froze some tokens, and pledged full reimbursement as it restores services in phases Yahoo Finance crypto.news.
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