A lot of us do it. On our server/hosting at some time or other we set up a test WordPress site. Something we use to either build sites or just play around in. Or other times we do an install, thinking we are going to start a blog, and well, that doesn’t work out, or it gets put on hold.
And we forget about them. That is where the danger lies.
What happens is that WordPress updates, plugins update, or even your theme updates get neglected. The site ends up being filled with out-of-date installs. Sometime this can go on weeks, months, and even scarier, years. All of which result in a big security risk.
And as you may know, that is one of one of many reasons WordPress is updated. To fill security risks.
By leaving those installs outdated, this gives hackers and viruses the opportunity to sneak in there. And if you have your current site on the same host, it gives hackers a back door into your other sites. Bad news.
What can you do? One of three things.
1. Manually delete all files on your server, and just to be safe, delete your database for that install as well.
2. Some hosts have a uninstall option. Although I can’t say how good that works, if you aren’t able to do #1, try this.
3. Or simply keep the site updated.
Just a little security advice for the day!