Brute force attacks on sites are very common. They are not that hard to pull off but can be painful to deal with for webmasters. We have already covered plenty of plugins that can help you survive tough brute force attacks. BruteProtect happens to be a cloud-powered brute force attack prevention plugin that can guard your site against botnet attacks.
This plugin can protect you from botnet attacks by tracking every failed login attempt across its network of users. That means the more people use the plugin, the better are your chances of surviving large distributed brute force attacks. The plugin supports multisite networks too. It is fairly easy to use. All you need is an API key to get started. We did have trouble getting that to work at first, but it was not a deal breaker.
As a webmaster, you need to take a proactive approach to dealing with hack attacks. This plugin could certainly help you handle brute force attacks better.