A press release issued by the South Korean National Tax Service on February 26 regarding the seizure of assets belonging to a taxpayer with substantial tax debts inadvertently revealed the mnemonic phrase of a cryptocurrency hardware wallet. The press release displayed an unredacted photo containing a Ledger wallet and the handwritten mnemonic phrase. According to the director of the Blockchain Research Institute at Ilseong University and data monitoring by Onchain, the vulnerability resulted in the suspected theft of approximately $4.8 million (about 6.4 billion won) in assets by hackers. On-chain data shows that in the early hours of February 27, 4 million PRTG tokens from the relevant wallet were transferred to an anonymous address. Experts criticized the South Korean tax authorities for their lack of basic understanding of cybersecurity, which directly led to a significant loss of national assets.