Quote from: haszel88 on September 17, 2019, 09:50:21 AM

Thanks for the input guys and sorry for posting in the wrong section.

Quote from: livingfree on September 17, 2019, 09:17:14 AM

If the BTC's are still there, move them asap to a much secure wallet and probably you will be the only one who knows. Crypto is money and the personal interest of other people with other's fund is there.

Yea i directly moved all BTC to a secure wallet.

Quote from: mainconcept on September 17, 2019, 09:24:21 AM

The other possibility ist that your friend used a MEW phishing site, not the original one.

The safest way to use MyEtherWallet is to use it through the trezor interface or use the offline version from github: https://github.com/kvhnuke/etherwallet

Last year there was DNS poisoning attack targeting Trezor users: https://blog.trezor.io/psa-phishing-alert-fake-trezor-wallet-website-3bcfdfc3eced
But I don't think that's what happened to you.

Why didn't you use a multisig wallet / multisig contract?

I dont think it was a phishing site since there was no reason for a transfer on that day. He saved the right MEW link on chrome.
Even tho it would be a phishing site, he still need to confirm the transaction on Trezor which he didn't(thats what he says).

multis wallet/ contract are def. something for the future. I actually didn't expect that someone can steal money from a cold wallet tbh.
This is also the reason why i think my friend didn't steal the money because it would be a very stupid scam tho.We share a lotto friends and even the amount was big, i think not big enough to risk a lot friendship and be marked as a scammer

Yeah listen, MEW doesn't magically get access to your private keys or it wouldn't be safe at all, you sign transactions with the hardware. He either didn't use MEW correctly and just accessed it like normally and just happened to have the trezor plugged in (he was using a generated private key on the site and not the private keys on the device) or if the money was FOR SURE on the trezor and he didn't even make a transaction then (as he says) someone has the private keys back in Europe or he stole it.