Before attempting recovery, protect the original data from accidental corruption or external threats .
If someone gains access to your wallet.dat file and it is not encrypted with a strong passphrase, they can instantly transfer your Bitcoin to their own address. The Mechanics of the Search indexofbitcoinwalletdat verified
This is the default filename for a Bitcoin Core wallet. It contains the private keys required to spend the Bitcoin associated with that wallet. Before attempting recovery, protect the original data from