Hello, would it be fine with Electrum developers if there was a website which hosted a public wallet, showing QR and 12-word pass phrase?
The wallet would hold 1 bitcoin, and the idea would be to see if anybody can hack it.
I don't think they would mind you donating 1 BTC to the first one who sees your 12 word seed.
With that they can recreate your private key and send the bitcoins to their wallet.
No hacking required, the Electum client app is designed to do that in a few simple steps: (
https://electrum.org/tutorials.html#restoring-seed)
The 12 word seed must be kept secret!