Korean ERP vendor Douzone Bizon backup service breached, putting many customers' staff and partner data at risk

Korean enterprise software vendor Douzone Bizon said on October 23, 2026 that attackers used a flaw in the backup solution behind its APO backup service to exfiltrate some encrypted data from backup servers, adding that it has found no sign the encryption keys leaked and has not yet identified affected customers or individuals ^[1]. THE ELEC reports the company confirmed two intrusions on October 16 and 21 and that the government classified the case as a serious breach and formed a joint public-private investigation team, while Boannews lists customers including K Auction, the KLPGA, Kukkiwon and NH NongHyup Bank subsidiary Agilesoda that have warned of possible personal data exposure ^[2][3]. Douzone Bizon advises affected individuals not to answer calls, texts or emails impersonating it, banks or public agencies, and to register with the FSS exposure prevention system (pd.fss.or.kr) to block new accounts and cards in their name ^[1].

Industries mainly affected: Technology, Cross-industry

1. Do not respond to calls, texts or emails impersonating Douzone Bizon, banks or public agencies that cite your name or account and ask for money or information, and do not click unknown links .