In the recent Binance hack, various Level 2 blockchains initiated emergency measures. According to unofficial statistics: A total of 148 Level 2 blockchains froze 250 cryptocurrencies transferred by the hackers, recovering over 4800 USDT in economic losses. Even for some blockchains with only a few dozen USDT involved in the theft, the foundation promptly froze the funds. In an interview with unofficial sources, an unnamed Level 2 blockchain executive stated that although only 19 USDT was frozen, this represented the most important economic activity on their blockchain this year.