On December 21, regarding the recent large asset security incident discussed in the community, F2Pool co-founder Wang Chun shared his personal experience on social media. He revealed that he suspected his private key might have been leaked last year. To verify whether this address had indeed been attacked, he decided to conduct a "stress test" by transferring 500 $BTC to that wallet. The result was unexpected. The hacker did not empty the account all at once, but rather "thoughtfully" only took away 490 bitcoins, leaving him with 10 — which he claimed was "enough to get by." This incident serves as a reminder to the entire community: even industry veterans can face the risk of private key exposure. From wallet security, storage methods for mainstream assets such as $ETH and $BNB, to the necessity of cold wallets, these fundamental yet crucial topics deserve a reevaluation by every holder. Behind the hacker's "selective transfer" lies the true vulnerability of on-chain assets.

#美国就业数据表现强劲超出预期 Bitcoin is still oscillating in a repeated situation over the weekend. From a short-term rebound perspective, three key levels need attention: 88355 (which has been tested once without breaking through), 89600 (a key area to watch), and 90845 (the strongest resistance zone). In terms of trading strategy, my thinking is as follows — If $BTC rushes towards the upper resistance zone and fails, I will look for short-term opportunities to intervene. If it falls back to the initial pulse position/support box at 87420, I tend to wait for a reversal signal to appear before making a long-term bullish layout. In case it loses upward momentum and continues to decline, we will see if it can hold the low point of 85890. If it holds, prepare to go long; if it doesn't, wait a bit longer. The key level is 89375 (the highest point of the resistance box). Once it breaks through here, my expectation is that it can finally push past the difficult barrier of 90400—of course, with the trading volume over the weekend, I am not very optimistic about achieving this. The movements of $ETH and $BNB also need to be monitored for these key technical changes.