When you delete files or folders, or when you format a computer's drive, the files (the content of your files) actually remain on your computer's disk, and they are just "marked as deleted". So, even if you delete some files or documents, anyone can undelete the files you deleted and read their content. If you format a drive, an "unformat" can often be performed and most of the files recovered.
So, when you delete files, folders or disks, someone using the right utility programs can recover (undelete) the files and read their content.
The File Shredder tool prevents this by safely overwriting the items you wish to delete multiple times, with random data, and then deleting them. This ensures that nobody can recover them, and this includes computer repair guys, thieves and government agencies with sophisticated computer forensics tools.
There are many stories of people giving away their computer for repair, deleting some documents and pictures before this, and then finding out that the computer repair guys recovered the files and pictures they had deleted on their computer, and posted them on the Internet. Or, stories of people formatting their hard-drives, selling their hard-drives on eBay, and then discovering that the buyer has recovered the data they had before formatting the drive, and used it for unlawful purposes. All these unpleasant situations could have been prevented by using the File Shredder instead of simply deleting the files or formatting a hard disk.
File Shredder makes sure that the files you specify are shredded (deleted for good, wiped out forever), and that nobody can recover them.
Decide which items (files, folders and drives) you wish to wipe out forever
Settings - decide how many times the items will be overwritten