Hi everyone i have an issue on my windows8.1 task manager, when idle my memory takes 15% i have 8gb ram, im check a running program that names antimalware service executable /windows defender has takes 55mb of my memory sometimes it going to 70mb, im didnt running windows defender before and my windows defender and my windows updates is up to date because im alr updated yesterday and also im disable my automatic update after im finished all update, this is normal for windows defender running at background takes 55mb of my memory?? Does Anybody has same problem with me?Thanks a lot for reading my strange problem and also english is not my mother tongue im so sory for that if my english is bad.