The Google+ Genesis Community had a hangout to discuss the different ways to secure a WordPress install and a multisite. We discussed various methods and plugins.
The first line of defense against a hack attack it to ensure you have a secure username, secure password and that you keep your WordPress software up to date. The massive hacks over the past several weeks have been successful because of users using the Admin username with a simple to crack password, like ‘abc123.’
Keep you WordPress site secure with some basic security measures. Listen to the hangout to get our take.
Several links, plugins and videos are referenced in the video, here are the links to those assets.
http://wpebooks.com/custom-registration/ (This is a great resource on preventing Splog on a Multisite install)
If you have additional thoughts or suggestions, please share them in the comments below.