In 2021, a Reddit user claimed to find a wallet.dat on an exposed QNAP NAS device via Shodan. The "index of" page showed a file modified in 2017, size 1.8MB. He downloaded it, ran bitcoin-tool to inspect, and found 13 encrypted private keys. After 6 months of dictionary attacks, he cracked one key—containing 0.003 BTC (≈$80 at the time). The rest were empty. He spent more on electricity than he recovered. The "verification" was a lie; the directory had been abandoned for years.
Short answer: Extremely unlikely. And if you do find one, it’s almost certainly a trap. indexofbitcoinwalletdat verified
Short answer: Almost never.
If you find a wallet.dat via Google dorking today, it is likely a trap or a honeypot. Here is why: In 2021, a Reddit user claimed to find a wallet