This is really a big failure, is there really no way to get them back?
The problem is that the hard drive was formatted several times, and data was written over it on multiple occasions. After 2-3 times, it becomes impossible to recover any data. So unfortunately, the answer is no. With the current technology, you can't get the data back. Even if you have some FBI guys to support you, the technology is not that advanced to recover such data. I feel bad for his losses, because he's so young (unlike me
). Hopefully, he will be able to carry on and book profits from cryptocurrency in the near future.
Now that is a problem. If I have that kind of Bitcoin amount meaning very big amount. He should have asked some experts on how he can make his investment safer, for a fee of course as I know those who handle cryptocurrency security are getting paid for their services. Millionaires tend to try and protect their assets and the person should have done so as well. He will be able to carry on with life and hopefully learn a valuable lesson from this.
I think it still can be recovered even if the drive was formatted several times. Computer forensics are experts in this field of recovering data fits worth doing but this is if he trusts the experts for this. Files in the drive are not actually erased by are simply rewritten to can be recovered. $900K is worth doing for sure.
Keeping your private keys in a text file is easy but it should have been backed up in a price of paper too kept in a safe place in case the computer crashes.
In theory it can be recovered data on the drive, but sometimes in practice it is not easy to do so. It is necessary to seek the help of people who
are experts in this field, but of course we have to find someone we can trust, because this involves a large amount of money. But based on
my experience, sometimes the data that is successfully recovered is often already corrupted and can't be reopened. Take this incident as
a valuable lesson for all of us, always keep private keys in two or three different places. If something untoward happens, we still have another
private key storage area, sometimes we really have to get used to thinking about the worst case scenario.