He didn't just post the passphrase, he also posted this:
"If someone figures it out, I will send you free sias"
I'd call that a clear invitation/authorization for anyone to try to crack his passphrase.
"If someone figures it out, I will send you free sias"
I'd call that a clear invitation/authorization for anyone to try to crack his passphrase.
It's like if you find someone's (real) wallet, and you pick it up and contact the owner to ask where to drop it off. Rather than leaving it there and just telling the owner what street corner it's on.