Let’s say your friend Trab is a terrible player, but you want him to be playing in a slightly higher bracket in Overwatch, so you log into his account for a bit and help him win. Congratulations, you have just committed a crime according to newly installed South Korean law!
But don’t worry; you’re not really the target of the anti-boosting law that has just gone into effect.
The law was approved last year targeting paid services that offer account boosting, which is apparently a pretty significant problem in South Korea. Legal analysts have already examined the now-applicable law and note that its evaluation of the crime varies significantly depending on the stance of the developers, whether or not money was exchanged, and how frequently it happened.
In other words, the aim is obviously against companies sucking down a lot of money against a developer’s wishes, rather than to punish you for making Trab win at least a few matches. But you should still watch out for potential legal results (if, of course, you live in South Korea).