A record of all past incoming and outgoing transfers.
When a web server is misconfigured, it may allow "directory listing." This means anyone can browse the files on that server through a browser. Searching for "Index of /" combined with "wallet.dat" is a common technique used by bad actors to find unprotected crypto wallets that were accidentally uploaded or backed up to public web directories. The Risks of Public Wallet Files indexofwalletdat free