Changing File Dates?

Many years ago I had an experience with Mac cleaning software that changed the dates of the files on my computer - is this a concern at all with CCleaner?

The only reason that I can think of why a file date would change is if CCleaner deleted a temporary file and Windows (or whatever created the temp file) recreated a new one.

What kind of files were they that got changed on the Mac with that other cleaner? Photos, documents, system files, other?