Self Custody

Crypto wallet lists are useful only when traders map them to a real workflow: mobile access, Bitcoin-only custody, DeFi, cross-chain use or cold storage.

Ledger Donjon disclosed a lab-grade attack on Tangem cards, while Tangem says everyday risk is extremely low. The useful takeaway is a practical custody checklist.

The SecondFi closure shows that wallet risk is not only about private keys. Recovery process, official communication and migration discipline matter too.

A weak-randomness wallet issue shows why recovery phrases are only as safe as the software that created them. Users should verify wallet origin and migrate carefully.