Ozys, a South Korean blockchain technology firm, has accused its former chief information security officer (CISO) of weakening the company’s firewall settings. This alleged action preceded an $81.5 million heist on the Orbit Bridge, a cross-chain protocol developed by Ozys.
Internal Security Breach Precedes Major Hack
Ozys claims that the former CISO, who had resigned voluntarily, made unauthorized changes to the firewall on November 22, just two days after their resignation request. The changes went unnoticed until January 10, leaving the system vulnerable. This revelation came to light after an unidentified entity transferred substantial amounts of various cryptocurrencies from Orbit Bridge to multiple new wallets on January 1.
The breach led to the transfer of a significant amount of cryptocurrency: $50 million in stablecoins (30 million USDT, 10 million DAI, and 10 million USDC), 231 wrapped Bitcoin (wBTC) valued at around $10 million, and 9,500 Ether, approximating $21.5 million
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