Eraser.7z -

: It can securely erase "unused" disk space to ensure that previously (insecurely) deleted files can never be recovered.

: Once installed, you can simply right-click a file or folder and select "Erase" to destroy it immediately. How to Use Eraser.7z Eraser – Secure Erase Files from Hard Drives Eraser.7z

The file extension indicates a high-compression archive created by 7-Zip, a free and open-source file archiver. : It can securely erase "unused" disk space