@(you need an account to see links) It really depends on the amount of neopoints or value of the items you want to purchase. If you're buying from someone who has everything already secured, and you're getting a small amount (like lower than 10m pure or in ETS) getting it directly in your main once is not a big risk to be honest. But, if you plan to get more than that, getting it in a shell is indeed better. For that, get hotspot shield for example, which is free to use. Activate it when you're about to get in the shell and so. Also, don't move things on the same day from the shell to your main if the items are too expensive or the amount of nps too large, going slowly is usually safer. For transfering, I recommend to use different lots on the TP or gift as a neofriend. Hope that helps