Sorry to be blunt, but I am always amazed by what this kind of stories have in common: trusting people without a contract (or at least a signed agreement). Even if it's your best friend who's going to hire you, don't accept promises such as "you'll get rich once we hit it big". Sign a contract stating how much of the company you own, what the vesting schedule is, acceleration upon change of control etc.
There are some assholes out there, so stop being naïve. This is a very good cautionary tale about what happens if you do.
Don't let somebody off the hook for "naïvete" if they enter into a business with somebody who got their assets through theft, and his job is to disguise the theft.
There are some assholes out there, so stop being naïve. This is a very good cautionary tale about what happens if you do.