Part 7/13:
Some manufacturers promote “Bitcoin-only” firmware, claiming it’s more secure because it supports fewer protocols. However, the reality is that this is marketing fluff. According to the manufacturers themselves, limiting support to Bitcoin doesn’t inherently make the device safer—it's about reducing potential attack surfaces and user error.
3. Closed-Source vs. Open-Source Code
Open-source code allows the community and security experts to review the software, identifying potential vulnerabilities. Conversely, closed-source wallets hide their codebase, requiring users to trust the manufacturer blindly.