offering margin is not an "activity of prey" (at least in the US, it's hard to find info about SK)
you need reputable trust built with your brokerage, typically deposit history of significance (at least 5 figures) and knowledge with margin accounts to even get a brokerage to allow you margin account privileges. Now, of course you can lie about most of this (not recommended and a securities violation btw) but it's not as easy to open a margin account as it was years ago.
Also, trading on margin isn't some outrageous high interest rate scheme like a loan shark, but typically it's substantial enough to be used effectively only over short durations (unless you're a hedge fund). Regardless, if you shit the bed you'll get a margin call triggered real fast and have to pay up the loss before shit really hits the fan.
mindless babble
Thank you for this highly ironic reply
Sorry, i couldn't see your original point and should have let it go without comment. I worked in trading foreign exchange for a trading bank for a couple of years, and have seen the results of bucket shops set up to steal money from "investors". I am sure you meant to educate me, and that's a valid intention. All the best, wishing you an excellent day.
no worries. that sounds like an interesting background with some stories that would be interesting to read about. consider posting them in a series or something.
my comment was more thinking of the average joe that hops on a big ebroker in the US.
all good