Bithumb internal groupware hacked, employee data leaked ยท updates https://pwn.watch/i/bithumb-groupware-breach-oct-2026 South Korean crypto exchange Bithumb detected unauthorized access by an outside party to its internal mobile groupware system on Oct 27 2026, leading to a personal data leak, and reported it to KISA and the Personal Information Protection Commission the same day. Information found so far mainly concerns employees, such as names, departments and contact details, but Bithumb has not ruled out that customer information shared in internal work files was included and is still analyzing the scope. Bithumb says its exchange systems are physically separated from the groupware and no crypto was stolen. Daishin Securities and Mirae Asset Global Investments reported separate breaches the same day. en Wed, 28 Oct 2026 00:00:00 GMT Bithumb internal groupware hacked, employee data leaked: Bithumb says the leaked data identified so far is mainly employee information such as names, departments and contact details, that it is checking whether customer information exchanged in internal work communications was included, and that its exchange systems are physically separate from the groupware, with no crypto stolen. https://pwn.watch/i/bithumb-groupware-breach-oct-2026 https://pwn.watch/i/bithumb-groupware-breach-oct-2026#2026-10-28-fd5189f2 Wed, 28 Oct 2026 00:00:00 GMT medium <p><a href="https://www.mt.co.kr/stock/2026/10/28/2026102810330014544">Source</a></p> Bithumb internal groupware hacked, employee data leaked: Yonhap reports that Daishin Securities (38,490 customers), Mirae Asset Global Investments and Bithumb all reported data breaches, and financial authorities began inspecting the Mirae Asset breach. https://pwn.watch/i/bithumb-groupware-breach-oct-2026 https://pwn.watch/i/bithumb-groupware-breach-oct-2026#2026-10-28-955e6f31 Wed, 28 Oct 2026 00:00:00 GMT medium <p><a href="https://en.yna.co.kr/view/AEN20261028002751320">Source</a></p> Bithumb internal groupware hacked, employee data leaked: Bithumb detects abnormal access by an unauthorized outside party to its internal mobile groupware system and a resulting personal data leak, and reports it to KISA and the Personal Information Protection Commission the same day. https://pwn.watch/i/bithumb-groupware-breach-oct-2026 https://pwn.watch/i/bithumb-groupware-breach-oct-2026#2026-10-27-53317523 Tue, 27 Oct 2026 00:00:00 GMT medium <p><a href="https://www.yna.co.kr/view/AKR20261028043951002">Source</a></p>