Cobo announced the official release of the second-generation vault hardware wallet. The second generation of Cobo Treasury not only inherited all the security attributes of the first generation vault, but also improved in many aspects. The second generation of Treasury follows the design of the first generation, and uses QR codes as the communication means for hardware wallets and supporting apps to achieve full offline. Another benefit of using QR codes as cold wallets and supporting apps for data transmission is to allow users to review the QR code information transmitted each time to ensure that they do not contain sensitive information such as Trojan viruses or private keys. At the same time, the Cobo vault uses a bank-level security chip for generating true random numbers, deriving public and private keys, signing transactions, and other operations to ensure that private data such as private keys will never leave the Cobo vault, effectively resisting physical (bypass) attacks . And private key generation and derivation follow BIP32, BIP39, BIP44 protocol. The security chip firmware and all application layer codes are currently undergoing security audits and will be fully open source from the end of April to the beginning of May. In addition, the second generation of Treasury has also designed a detachable battery, users no longer have to worry about damage to the hardware wallet caused by battery leakage, and it supports power supply of No. 7 battery. If the lithium battery cannot work normally due to long-term storage, it can be used for emergency use To avoid the dilemma of unable to complete the deposit and withdrawal in time due to battery damage. In addition, the second generation of the vault also added a fingerprint module to avoid password leakage and coin loss caused by peeping, and designed an anti-disassembly and self-destruction mechanism. The vault will detect the hacker’s operation of opening the case and implement a self-destruction operation, erasing all private information such as private keys.