The development team of the privacy cryptocurrency Zcash (ZEC) plans to introduce post-quantum signature opcodes to the network in January next year, supporting hash-based signature technology to defend against potential quantum computing attacks. This solution primarily targets the transparent (public) payment pool, where approximately 70% of ZEC is currently stored. Although the developers have set January as the target deadline, the specific network activation time has not yet been finalized. This upgrade aims to prevent attackers from using existing public keys to reverse-engineer private keys and forge payment authorizations. Additionally, the Zcash node validator Zakura has launched a wallet tool based on Private Information Retrieval (PIR), allowing users to query balances across multiple addresses without revealing the correlation between those addresses to the server. Previously, Ethereum researcher Justin Drake warned that artificial intelligence could accelerate the cracking of traditional encryption algorithms and urged cryptocurrency holders to prepare for potential security threats.