[Three Key Lessons from Stacks Co-Founder on the Coldcard Security Incident: Bitcoin Storage Should Be Diversified, Ecosystem Needs Stronger Security Collaboration] Deep Tide TechFlow News, August 2nd, Stacks co-founder Muneeb shared his thoughts on the Coldcard wallet incident, summarizing three key lessons regarding Bitcoin storage, quantum computing threats, and ecosystem security development. On Bitcoin storage strategies, he pointed out that many industry security experts are not even familiar with Coldcard, and even top security research institutions may not have thoroughly audited its code. Muneeb believes that the best future approach should be asset diversification rather than concentrating all funds in a single solution. He suggested the following: 1. Allocate 20%-30% of BTC to ETFs, such as BlackRock's Bitcoin ETF IBIT, to gain professional custody and regulatory protection. 2. Allocate 40%-50% of BTC to multi-signature solutions like Casa, for example, a three-key model where keys are distributed across a security company, a mobile device, and a hardware wallet. 3. Allocate 20%-30% of BTC to more advanced self-custody solutions, combining different hardware wallets and entropy sources. Regarding the threat of quantum computing, Muneeb stated that once quantum computers break through the existing cryptographic systems in the future, Bitcoin users might experience shocks similar to 'BTC in cold wallets suddenly being transferred away.' The quantum threat is real, and the industry should prepare in advance rather than underestimate technological progress, especially in the context of large language models accelerating breakthroughs in scientific research.