he said he never enter password after this wife-install. so this all is somewhat strange. without password if hackers drag your comp to their den they'll get nothing still.

thanks for pointing it out to me. as advice it is certainly questionable no more to add. agree with you.
I didn't mean to suggest something like that (even though, most of us who have entered this world, probably started via an exchange without major security settings)...

I want recommend glacier protocol for the inputs it provides in the setup of a cold wallet.

This is definitely a big loss, if I had that much bitcoins, I would have it stored on an online and a personal wallet, this; I believe the number one mistake op made, 11 bitcoins is not a small amount of money, and even if you don't have money anymore, you could sold a tiny portion of it and buy yourself a good hardware wallet which you could use as a cold storage for the remaining number of bitcoin.

Well, this I believe is what we always have been saying that decentralization comes at with a prize, a sacrifice..

Many of us profess and confess that we agree and are ready for a decentralized society, meanwhile, our actions and inactions does not show that indeed, we are ready for a complete decentralized society.

Sorry op, for your loss.

Very very smart. Having multiple cold wallets on different technologies is very smart. Additionally I only use a dedicated device to manage my monies with. It has or does nothing else, ever.

The honeypot idea is great.