CZ retweeted a post reminding users to guard against data breach risks, listing four incidents reported today by Coinbase vendor Amplitude, Bithumb, and two South Korean brokerage firms, Mirae Asset and Daishin Securities. He pointed out that leaked trading data (names, emails, phone numbers, addresses, ID documents, transaction history) is primarily used for phishing, SIM swap attacks, and social engineering. He advised users to protect their accounts by using separate email aliases, hardware security keys, dedicated phone numbers, and enabling withdrawal whitelists and anti-phishing codes.