On Guard protects the Mac OS system from being tempered with (e.g. if users try to put some files in the trash, renaming them, etc...)
On Guard is the world's only multi-platform desktop security software that offers a consistent cross-platform interface. Power On offers the ultimate solution for any classroom or workplace environment.
Whether you're working with Macintosh or Windows operating systems, the On Guard feature set and appearance remains nearly identical ...
On Guard prevents users from renaming, moving, copying, and trashing files and folders. No more missing applications, or files named "$xd%3#@". On Guard limits access to the System and locks control panels, and printing. It even directs file saving to other media or specific folders ...
On Guard eliminates the need to set up security on each computer. With On Guard, you can configure the security of an entire network from one computer. Configure one computer and save the settings to other computers on your network.
Power On Software, Inc. (2000). On Guard. www.actionutilities.com/site2/html/products/og.html
(1.15 MiB / 1.21 MB)
On Guard v3.3.5 installer (2001) / compressed w/ Stuffit

22 /

2014-04-14 /

2019-03-21 /

66ed23561d3867f3722d09664fa40faee18ce60c /

/
(568.55 KiB / 582.19 KB)
On Guard v3.0 installer (1998) / compressed w/ Stuffit

1 /

2019-03-21 /

21088d4555e690c28a0f3e0a92cee2221775e072 /

/
Architecture 

68K + PPC (FAT)
System Requirements 
From Mac OS 7.0
up to Mac OS 9.2
Compatibility notes 
Architecture: 68K + PPC (FAT)
Mac OS 7.x - Mac OS 9.2.2
Emulating this? It could probably run under:
SheepShaver