What caused the surge in small BTC transfers on the chain? Hurry up to catch up with the FTX crash period! A critical attack on a vulnerability, blasting out groups of 'startled birds'! Coldcard hardware scandal triggers panic among retail investors, with a large amount of BTC flowing back into exchanges Cold wallet users should be the most calm group in the cryptocurrency industry - they firmly believe in "Not your keys, not your coins", hoard coins for a long time, do not touch CEX, and hold their private keys tightly in their hands. However, with the explosion of a major vulnerability in the random number generator (RNG) hidden for 5 years by the hardware wallet benchmark Coldcard, the strongest defense line of faith was instantly shattered, evolving into a nationwide wave of retail investors fleeing. The latest on chain data shows an extremely abnormal fund migration on July 31st: <10 BTC Recharge Soars: The amount of funds transferred to the exchange from a single transaction of less than 10 BTC instantly surged to 7300 BTC, setting a new peak since February 6th this year! Retail Small Recharge Tide: A more segmented<1 BTC small transfer reached 39600 BTC on the same day, almost equaling the safe haven level after the FTX crash in November 2022! Nearly one million active addresses: The number of active addresses on the internet has skyrocketed from approximately 645000 to nearly one million, with the vast majority being "sending addresses" eager to transfer assets out of the cold wallet. The cause of this trust crisis stems from a technical flaw in the open-source hardware wallet Coldcard: according to on chain tracking, as of August 2nd, hackers have stolen a total of 1367.05 BTC (approximately $88.6 million) through three waves of attacks, affecting over 4585 addresses! Have you updated the firmware of your cold wallet? After this controversy, do you think it's safer to keep assets in top tier CEX or hardware wallets? Coldcard vulnerability Bitcoin CEX