Instructions
Tested with Arma Beta 99515+ but should work on other versions too
Extract somewhere
Launch firefox as administrator
Launch 'plugin-container.exe'
A console window should appear (the hack will be injected into firefox.exe)
Launch DayZ (if you inject after start: stay in the menu, don't connect to a server yet)
If the console says 'failed to attach' you need to disable uac and run firefox as admin
Infinited health
Wall Hack
Infinite Ammo
Infinite Water
Free weapons
And many more