🔐💰 12 #Bitcoin security levels:

- level 0: on an exchange. You don’t really own anything.

- level 1: hot storage on a closed source shitcoin wallet (like Ledger)

- level 2: hot storage on an open source bitcoin only wallet (like bluewalletio or SparrowWallet)

- level 3: cold storage on a usb hardware wallet with shitcoin support

- level 4: cold storage on a bitcoin only usb hardware (like COLDCARDwallet mk4 or BitBoxSwiss)

- level 4: cold storage on a bitcoin only airgapped hardware wallet without reproducible builds (like KeystoneForBTC)

- level 5: cold storage on a bitcoin only airgapped hardware wallet with reproducible builds (like FOUNDATIONdvcs Passport)

- level 6: analog-only airgapped cold storage (Passport supports this) with self generated ephemeral seed

- level 7: cold single seed + passphrase (protect against seed compromise)

- level 8: Shamirs secret sharing cold single seed (protect against seed compromise & introduce fault tolerance)

- level 9: hybrid 2/3 multi-sig with 1 hot key

- level 10: full cold 2/3 multi-sig

- level 11: hybrid 3/5 multi-sig with 1 hot key

- level 12: full cold 3/5 multi-sig

Credit: Rob | Bitsaga.be