Harry Potter question...Draco Malfoy?

i don't think that he would warn them, mostly because he would be afraid of the death eaters. however, i don't think that draco would be cruel enough to kill them himself. like in the last book *spoilers*, when harry ron and hermione are caught by death eaters and brought to the malfoys house, draco says he can't tell whether they're the golden trio or not. all in all, i think that draco's just scared [and let's face it, most people would be].