User blog comment:Fbhuvjhvbnvfdkv hfd/KS - Kill steal or Kill secured?/@comment-4542190-20140515065645

If you want my humble opinion, it depends.

If one does like, 99% of the damage to an enemy hero and then suddenly another one pops up and deals the killing blow, then that's pretty much a kill steal. The only exception to that is when the one who pops up is your adc. Because carries need the kills more than anyone else (as well as benefit more than anyone else). So, adc's DON'T ksteal, only get ksed. When more than 2 people take part in a kill it's more complicated but there could be both instances (kill steal a little less I believe).

Kill secured is when someone gets a kill that, if he didn't take it, his team would lose it otherwise, they wouldn't be able to get it. And you should never miss kills when you have the chance. Once I got a double kill with Spin to Win as Garen in the Dragon area on two enemies that were already very low because my teammates already threw almost everything at them (I arrived late at the front lines because I was trying to get as faster as I can and went back and forth because they constantly changed directions). I said that I got a double ks but "you didn't say anything" and they replied "I wasn't ks man, we would lose the kills if you didn't get them." That's one of the bonuses you get when you're playing with your friends.

That's my take.