Security researchers and "white hat" hackers utilize similar queries to identify vulnerable servers. The goal is to notify the server owner that they are exposing sensitive financial data.
: Older versions of Bitcoin Core (specifically 0.18.0) had a vulnerability where wallet data was stored unencrypted in the system memory, potentially allowing attackers to reconstruct the file after a crash. How to Protect Your Wallet Never Store Wallets on Web Servers indexofbitcoinwalletdat exclusive