I guess that's why it's just a proof of concept. Also, those three points you raise would certainly deter you and me from being caught, but e.g. my father (in h

I guess that's why it's just a proof of concept. Also, those three points you raise would certainly deter you and me from being caught, but e.g. my father (in his early 50s), who uses Word, Internet Banking, Email, pretty much the same way for 20 years and does not understand, for example, the concept of a "folder", he would assume the computer is displaying normal behaviour, because he doesn't have the knowledge to assume otherwise. "Fake UI" or "user-specific browser settings", "font rendering", are things that don't even (make sense/matter/seem odd) to him. Ironically, my great-aunt, who's almost 90 but was always somewhat of a "techie", would notice something weird and call me or her son. But I guess my point still stands.