I'm well aware that certain themes and/or plugins can be tainted with hidden spam code, but this one truly baffles me.
I started using a theme a couple of months ago. I'm now to the point where I'm almost finished with the site and ready to go live.
I always review any new additions I make to the site in order to ensure everything looks as it should and have even had others double check things as I've added more to the site for proofreading and suggestions.
A couple of weeks ago I added some content that contained the word "dietetics" on a couple of separate pages, as well as in a text widget. For some reason, today is the first time that the "diet" portion of "dietetics" has become a link to some nutritional supplement. This occurs with all instances of "diet" throughout the site.
When you try and edit the post, everything looks correct, but still returns a link. However, when I go back to check the text widget, an html link has been added to "diet." Removing the code and saving doesn't solve it as the code is reinserted into the widget.
I've already tried disabling all of my plugins, but the links remain. I haven't made any significant additions or modifications to the code in the past few days so I have no idea what could have caused these links to appear all of the sudden.
I've run theme authentication plugins and they've all returned false positives and nothing that appears to be the culprit.
Any suggestions on how to identify what is causing this?
Thanks in advance!