If you want to wipe files from your Mac in the most secure way possible, Shredo is a solid option.
Shredo: file shredder & privacy cleaner
Requires OSX 10.10 or higher
3 data erase algorithms
Select a shredding method based on security and speed
User Friendly and supports Drag & Drop
Shredo is easy to use and very intuitive
Privacy Scan & Secure Empty Trash
Scan your system for browser history, cookies and other privacy threats
Beautiful and Flexible Interface
Nice looking, dark user interface with vertical & horisontal layout support
Shredo reviews by popular Mac blogs and websites:
Introduction to Shredo to help you get started. A short article describing Shredo features
A Must Have Mac App to Securely and Permanently Erase Files
Mac utility lives up to its name by shredding files you want to ensure are permanently deleted. Shredo as in shred files so they cannot be recovered.
Fast jeder Mac-User hat sensible Daten auf seinem Rechner – was tun, wenn diese sicher gelöscht werden sollen? Mit Shredo gibt es eine Lösung.
個人情報や重要な機密データをMacで削除する時に、後で復元できないように安全に削除したいときは「Shredo」を使うと便利ですよ。
Shredo：自带三种安全级别的文件粉碎工具