Been using CCleaner for years now (always and frequently updated)and it's johnny-on-the-spot for the things it does (remarkably well!) But I'm curious to hear about "Secure File Deletion" as a feature because unless that refers to its own innate file deletion processes, I don't know of any user selectable file/s/disk wiping that you can do with it. I'd love to be proven wrong! It's certainly great at everything else it does!