Like you're saying, there's tools for that. Google autocompletes "은행 설치" (bank installation) to "은행 설치 프로그램 삭제" (bank installed programs removal) and the very f

Like you're saying, there's tools for that. Google autocompletes "은행 설치" (bank installation) to "은행 설치 프로그램 삭제" (bank installed programs removal) and the very first link immediately is the homepage of the tool you're talking about, so it doesn't require much inside knowledge to use. Of course the majority of people doesn't bother with this but quite a lot of people do. Even if many of those do so for non-security reasons, e.g. gamers who are afraid the crapware will slow their computer down.