[wolfsrain]

From what I recall every game developed by Bohemia Interactive has FADE as protection. And this one is no different. The FADE protection is linked to the CD-key, which the protection checks if it's anoriginal one. Additionally ArmA2 has SecuROM which does the classic CD-check. Any crack out it's bypassing not only the CD-check, but the CD-key check too . Which from what I recall it's still illegal in many countries.
Same goes for every crack issued for Operation Flashpoint and ArmA.