Compatibility: OS X 10.10 or later 64-bit
Securely erase file and folders and make sure the information cannot be recovered by re-writing the data up to 35 times while using various algorithms
Marking files for deletion does not mean the data is instantly erased from the drive: the information remains stored until the operating system decides to write new data on top of it As a result, there are numerous file recovery tools out there that offer you the possibility to get back items that you have deleted by mistake. Shredo is a small utility that can help you make the recovery process harder or even impossible.
Homepage: http://mymixapps.com/shredo
Depending on the security level and the data erasure rate, you have 3 methods of grinding: 1-pass - Provides reliable protection and quick data deletion. 7-pass - slow speed, but better protection than 1 pass. 35-pass is slow, but provides better protection. 
TO MAC USERS: If RAR password doesn't work, use this archive program:
RAR Expander 0.8.5 Beta 4 and extract password protected files without error.
TO WIN USERS: If RAR password doesn't work, use this archive program:
Latest Winrar and extract password protected files without error.
