Not many people know that using delete in DOS or the Windows Recycle Bin to delete file is not secure. Using these methods merely removes the file systems pointer to the file. All the data in those files remain on your computer until the space is reclaimed and overwritten by another file. The remaining data can be easily recovered with any software recovery program most of which are free to download. Even if your data has been overwritten your data can still be vulnerable. Using advanced recovery techniques to analyze latent magnetic traces most any file can be re-covered. Shredder can stop this. Shredder is designed to destroy files beyond recovery before deleting them. This means even if you can recover the file, the data within the file will be totally useless. How it works is it over writes the data in the file with random information a number of times before finally deleting the file. Shredder also cleans all history and temp files.