Honestly, I think that someone that naïve can't be protected. Even if every inch of the page had been full of warnings, he still might've fallen for it, since he wasn't even thinking about the possibility of being given evil instructions. The scammer was a Jr Member, not some Legendary.

People like him (ie. the majority of the world population) are why we'll someday want an optional sidechain or something on top of Bitcoin which has reversible transactions (via some sort of automatic 2-of-3 escrow which expires after a while, maybe).

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He should have the police contact me and I'll give them the scammer's IP logs.