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  2. Published Social post

    The Block (@TheBlockCo)

    THE BLOCK: South Korea’s top two crypto exchanges, Upbit and Bithumb, both reported roughly 50% decline in revenue in H1 2026, driven by declining trading volumes. Dunamu (Upbit): 408 billion won ($289.5M, -49.1% YoY) Bithumb: 168.7 billion won ($119.2M, -48.7% YoY)

  8. Published Social post

    CoinDesk (@CoinDesk)

    JUST IN: Hana Bank, one of South Korea’s largest commercial banks, acquired a $670 million stake in Dunamu, the operator of the country’s largest crypto exchange Upbit. The firms also agreed to cooperate on building infrastructure for a won-denominated stablecoin ecosystem.

  10. Published Social post

    Wu Blockchain (@WuBlockchain)

    South Korean Banking Giant Hana Bank Buys 670 Million USD Stake in Upbit Operator Dunamu According to Bloomberg, Hana Bank, one of South Korea’s largest commercial banks, acquired a 1 trillion won, or about 670 million USD, stake in crypto exchange operator Dunamu. Hana Financial Group said on Friday that Hana Bank’s board approved the purchase of 228 million shares in Dunamu from Kakao Investment. Dunamu operates Upbit, South Korea’s largest crypto exchange.

  12. Published Social post

    Wu Blockchain (@WuBlockchain)

    GIWA Chain to Operate Under OP Enterprise Self-Managed Model, Upbit to Control Primary Sequencer The Optimism Foundation announced the signing of a memorandum of understanding with Dunamu, the parent company of South Korean crypto exchange Upbit, to co-develop GIWA Chain. The project was first announced by Upbit in September 2025 and is built using Optimism’s OP Stack. Optimism emphasized that GIWA Chain is planned to be the first deployment under the OP Enterprise Self-Managed model. Under this model, Dunamu / Upbit will operate the primary sequencer and retain control over core network decisions, while the Optimism Foundation will provide engineering support, monitoring, and backup sequencer infrastructure. https://x.com/Optimism/status/2051328218314023249?s=20

  13. Published Social post

    Wu Blockchain (@WuBlockchain)

    Upbit Partners with Optimism to Launch GIWA Chain on OP Stack Upbit, South Korea’s largest crypto exchange, announced a planned partnership with the Optimism Foundation to develop GIWA Chain, an Ethereum Layer 2 built on the OP Stack. The testnet is now live, with mainnet launch pending. The chain will adopt OP Enterprise’s self-managed model, with Upbit operating the core sequencer while Optimism provides support and backup infrastructure. https://x.com/Optimism/status/2051328218314023249?s=20

  15. Published Social post

    Wu Blockchain (@WuBlockchain)

    South Korea’s largest crypto exchange Upbit has deleted all old deposit addresses amid wallet maintenance. Users must generate new ones before depositing. From Dec. 5 at 17:00 (KST), deposits and withdrawals for 33 assets across 21 networks will gradually resume. The update follows a Nov. 27 security breach that caused about 44.5 billion KRW in losses. https://twitter.com/i/web/status/1996839353562353836

  17. Published Social post

    The Block (@TheBlock__)

    Upbit says emergency audit of $30M hack uncovered internal wallet flaw that could let attackers derive private keys https://www.theblock.co/post/380764/upbit-says-emergency-audit-of-30m-hack-uncovered-flaw-that-could-expose-private-keys?utm_source=twitter&utm_medium=social

  18. Published Social post

    Wu Blockchain (@WuBlockchain)

    Upbit parent company Dunamu CEO Lee Sirgoo apologized for the recent security breach, admitting internal security lapses and pledging zero user losses. Upbit estimates about 44.5 billion KRW in affected assets (38.6B KRW user funds, 2.3B KRW frozen, and 5.9B KRW company loss). https://t.co/rGVjwUdnB2

  19. Published Social post

    GoPlus Security 🚦 (@GoPlusSecurity)

    💭 The Upbit @Official_Upbit breach raises some serious questions: Hot wallet breach points to key management failures & internal network vulnerabilities. Cold wallets remain secure. What stands out: 1⃣"Anniversary attack" - Same date as 2019's $50M hack (6 years ago) 2⃣Tactical timing - Hours after major Dunamu-Naver merger news 3⃣Classic Lazarus signatures - Speed, technique, and symbolism 4⃣Sophisticated laundering - Multi-DEX routing with potential regulatory misdirection (2,200 SOL → Binance) Strong indicators of long-term APT infiltration. GoPlus continues monitoring. Stay tuned for updates.

  21. Published Social post

    Wu Blockchain (@WuBlockchain)

    Yonhap News reports that South Korea’s largest crypto exchange, Upbit, suffered a hack worth about 44.5 billion KRW ($32 million). Authorities are investigating whether North Korea’s Lazarus Group was behind the attack. The group was also linked to Upbit’s 2019 theft of 58 billion KRW in Ethereum. The recent hack targeted a hot wallet, with hackers using “hopping” and “mixing” methods typical of Lazarus. https://t.co/Lp53TknRK7

  31. Published Social post

    Wu Blockchain (@WuBlockchain)

    Dunamu, operator of South Korea's largest crypto exchange Upbit, will partner with Vietnam's MB Bank to launch the country's first domestic digital asset exchange, providing technology, infrastructure, and advice on compliance, investor protection, and talent development. MB Bank is among Vietnam's top five banks, with assets near $50 billion. https://t.co/a91Jwpv970

  35. Published Social post

    CoinDesk (@CoinDesk)

    South Korean financial authorities are planning sanctions against crypto exchanges who are operating illegally in the country, according to a report.. By @JamieCrawleyCD https://trib.al/dcako1I

  39. Published Social post

    Wu Blockchain (@WuBlockchain)

    South Korea's Financial Services Commission said it will investigate the market monopoly structure of Upbit, South Korea's largest cryptocurrency exchange. Upbit is also the world's second-largest spot cryptocurrency exchange, and its market dominance began after establishing a…

  40. Published Social post

    Wu Blockchain (@WuBlockchain)

    South Korea's largest exchange Upbit announced that it will launch Wormhole (W)'s KRW, BTC and USDT trading pairs at 18:00 UTC+8 on October 2. Wormhole is the cross-chain bridge protocol of the Solana ecosystem. upbit.com/service_center…

  41. Published Social post

    Wu Blockchain (@WuBlockchain)

    CEX Data in Feb: The spot trading volume of major exchanges decreased by 1.6%. The top three in terms of change rate were Bitget 18%, Bybit 8%, and Binance 7%. The bottom three were HTX -23%, Upbit -20%, and Mexc -20%. https://wublock.substack.com/p/cex-data-in-feb-trading-volume-and?r=jbpop&utm_campaign=post&utm_medium=web&triedRedirect=true https://t.co/Gf20BBxyjB

  43. Published Social post

    Wu Blockchain (@WuBlockchain)

    Kazakhstan’s financial regulator blocked 980 unregistered cryptocurrency exchanges in 2023, including Coinbase, and also launched 9 investigations into money laundering. Currently approved to operate in the country are Binance, Bybit, CaspianEx, Biteeu, ATAIX, Upbit, etc.…

  44. Published Social post

    The Block (@TheBlock__)

    Upbit's parent firm Dunamu reports 81% net profit shrink for Q3 Y-o-Y https://www.theblock.co/post/264929/upbits-parent-firm-dunamu-reports-81-net-profit-shrink-for-q3-y-o-y?utm_source=twitter&utm_medium=social

  45. Published Social post

    Wu Blockchain (@WuBlockchain)

    According to Decenter, Dunamu, the parent company of South Korea’s largest cryptocurrency exchange Upbit, had a consolidated operating profit of approximately US$79 million in the third quarter, a year-on-year decrease of 39.6%, with revenue of approximately US$148 million.…

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