If you do not have good protection on your site files can easily get lost. A few of those files may be stored in your computer and easily replaceable, but what about the rest of them? Where will you get them out of again, if you lose them the first time? Especially for sites that have been in business for a long time, secure your wordpress website is vital. Many times, long-term sites have made a high number of documents and have a lot of data. Recreating that all are a nightmare, and not something find this any business owner wants to do.
Don't depend on your internet host - Many people rely on their web host to"do all that technical stuff for me", not realizing that sometimesthey don't! Far better to have the responsibility lie rather than out of your control.
It's a WordPress plugin. They're drop dead simple to install, have all the functions you need for visit the site a task such as this, and are relatively cheap, especially when compared to having to employ someone to have this done for you.
You can also get an SSL Encyption Security to your WordPress blogs. The SSL Security makes secure and encrypted communications with your site. You may even keep the all of the that site cookies and history of communication so that all transactions are recorded. Make sure all your sites get SSL security for utmost protection.
Do your homework and some hunting, but if you're pressed for time and need to get this try out the WordPress safety plugin that I use. It's a relief to know that my website (and business!) are secure.