Corruption can be recognized easily by a Conscious Mind. The boundary line where corruption starts can be seen. It's an obstacle, only because it's based on choice. Any action is a choice. Even if you take no action, it is still taking action and a choice. You either choose to interact with others or you do not. You choose to be selective about who you interact with? Again, it's a choice.
All actions are based on morals. So, actions are either good or bad. This is part of living in a duality based world. Any action that harms other people is deemed bad. Any action that benefits other people is deemed good. Some people open a gray area, deeming actions less damaging, as if it matters because the damage comes in two parts. The gray area people play with is about lying. They say it is okay to lie to someone who is dying. However, lying is lying.
Corruption begins in the smallest form. You will be willing to do this, for that reason, will become what you will continue to do, even with other things in your life. It will spread from one thing and spill over into other areas. Next thing you know, you've been corrupted in so many aspects of your life, you'll begin to wonder who you are? To prevent corruption, is to be completely honest with yourself about being honest with yourself. You must understand that morals are absolutes and in doing so, you can gain the foresight to build your future. A Good deed can be seen by others, just as a Bad deed can be seen by consequences of what happens.