9 hours ago user.failed_login: Originated from 190.203.197.244
15 hours ago user.failed_login: Originated from 190.205.229.170
2 days ago user.failed_login: Originated from 41.59.254.18
2 days ago user.failed_login: Originated from 190.207.188.99
Easiest and cheapest thing that comes to mind: sign up for a free Cloudflare account. They will cache your static content and actually speed up the load times of your pages. For $20/mo you get a few more cooler features and SSL if you need it.
If it sounds like I'm trying to sell them, I am. :) I have it on several of my sites, and it works great for me!