Secure Eraser is described as 'Because it's been deleted from your hard drive, doesn't mean it's gone forever. As long as the information was not overwritten, anyone can restore it at any time. It gets even more complicated, if a computer has been resold or given away' and is an app in the Security & Privacy category. There are more than 10 alternatives to Secure Eraser for a variety of platforms, including Windows, Mac, Linux, Android and iPhone. The best alternative is Eraser, which is both free and Open Source. Other great apps like Secure Eraser are Permadelete (Free, Open Source), Active@ KillDisk (Freemium), Alternate File Shredder (Free, Open Source) and iShredder (Paid).
This program offers the possibility to finally delete files and/or folders (no recovery possible). The program also can overwrite the free space on a drive, which means, that already deleted files cannot be restored, too.
When you normally delete your files in Mac OS X, the operating system is only forgetting where those particular files are placed, while the data still physically remains on the drive. Beginning with Mac OS 10.
BitRaser File Eraser is a DIY software for permanent wiping of sensitive files, web browsing history, app & system traces, and unused space on the laptop, desktop, and external storage media. The tool safeguards your personal data from falling into the wrong hands.