Backup your WordPress website
Put this task to the top of every list you make. Backups are the most important task that you can undertake. If the worst happens, a current working backup ensures that you are back up and running in the shortest amount of time with the least amount of lost data.
A successful and recommended backup solution looks like this:
How To Minimise Spam – WordPress
With anything, there is an easy way and a hard way. So happens, there are a number of easy ways to stop WordPress comment spam. Before we get to the easy ways – the hard way is manually. Manually means logging into the backend of your site and looking through your comments and weeding out the spam.