The claim is directly supported by the fetched press release titled "Bybit Detects and Blocks Coordinated Fake Deposit Attacks, Preventing Over $1 Billion DOT in Potential Losses," which explicitly says Bybit detected and stopped coordinated fake deposit attacks before funds were lost. Corroboration attempts via web and X surfaced matching secondary/social references, including https://x.com/DegenerateNews/status/2041789418600562816 and https://x.com/thecryptobasic/status/2041793690927292634, but these mainly echo the same press release. Because the strongest evidence is Bybit's own release and I did not find an additional independent technical disclosure or regulator filing, confidence is medium rather than high.