This is a security issue most computer users do not take seriously until it’s too late. So, just because you can’t see a file in the directory after it’s been deleted doesn’t mean that it’s not there. The file still exists on the hard drive and could easily be retrieved with recovery software. When you drag a folder into the trash bin on your desktop, all you’re doing is deleting the file system - the road the operating system takes to retrieve the data. What if someone else wanted to get these deleted files? How could they do it? And could you stop them? What really happens when you delete a file? Moreover, most people don’t realize they’re not actually gone. The bad news is that most people don’t think about these files unless they need to recover them.
In this case, the ability to bring those files back from the dead is usually good news.
Many of us have at one time or another accidentally deleted items we did not mean to. Some people will be relieved to know that, most of the time, deleted files are not permanently gone.