learn.equalit.ie

EFF refers to OS X 10.4 and we are already at 10.11, and Apple official advice is as follows: "If you want to delete files that contain sensitive information, you can use Secure Empty Trash. Files deleted in this way are completely overwritten by meaningless data." It is very different from what is written in EFF guide, and also you can no longer find anything in help if you look for "erasing free disk space". I mean you will find related topics, but assuming the guide is for users of all levels of proficiency, this is way too complicated. Maybe a simple piece of advice from Apple could be given and that's it?