CPU well over 100% sustained

Hello all,

Been awhile since I've had to do anything security wise to my node. It's pretty much just been serving nothing of interest to anyone. But I got an email yesterday saying my CPU usage was 100% for a bit. I looked and sure enough it was. Today it is at over 200%. My bandwidth has spiked in usage as well. I looked through some of my logs and only see yandex crawling for some reason, and Morfeus. I put morfeus in my .htacces and cleaned up a bunch of files that made it into my pub folder. And change my permissions to 750.

Still spiking at over 200% CPU usage though. Any suggestions on locking this down further?

Thanks