To prevent your wallet from appearing in an "index of" search results, follow these security best practices:
Always set a complex passphrase within Bitcoin Core. Avoid simple passwords that are susceptible to dictionary or GPU-based cracking . indexofbitcoinwalletdat link
Even encrypted files are at risk. Attackers use tools to perform Padding Oracle Attacks or brute-force passwords if the encryption was weakened by older software vulnerabilities. To prevent your wallet from appearing in an
Never store unencrypted wallet.dat files on cloud services or public web servers. Use an encrypted external drive or a dedicated hardware wallet for long-term storage. indexofbitcoinwalletdat link
Even without the password, the file may reveal transaction histories and associated public addresses. How to Secure Your Wallet Data