About Our Authors

Nicole Castillo

Lead Author

Nicole Castillo has spent the last 5 years evaluating hardware wallets from a security-first perspective. After a career in penetration testing at a cybersecurity firm, Nicole pivoted to focus exclusively on cryptocurrency cold storage. Nicole personally owns and rigorously tests over a dozen hardware devices, publishing findings that help users make informed decisions about protecting their digital assets.

cold storagemulti-sig walletsseed managementhardware security modules

Amanda Rojas

After 3 years of using and comparing hardware wallets, Amanda Rojas has developed a keen eye for what separates a genuinely secure device from clever marketing. Amanda focuses on the practical aspects — setup experience, daily usability, recovery workflows — that matter most to people actually managing their own keys.

wallet usabilitycold storagecrypto privacybeginner-friendly guides