: Even if the file is encrypted, a hacker can use tools like John the Ripper to attempt to brute-force the password. Fake Wallets
A freelance web developer kept a backup of their 2017-era wallet (worth $50,000 today) in their public_html folder because they were "working on a crypto payment plugin." They forgot the file existed. A Shodan bot indexed it. Three years later, the wallet was drained. The victim swore they never clicked a phishing link—but they did expose the file themselves. Index-of-bitcoin-wallet-dat
In web hosting, if a folder doesn't have an "index.html" file, many servers will default to showing a literal list of every file in that folder. This is known as an page. : Even if the file is encrypted, a