In IT we have access to everything and that means that our trust and integrity means everything. We will see things that are very personal, we will know things that are very sensitive, and people will trust us.
If they question our integrity, our trust worthiness, or even our respect for authority then we lose our value to the organization. Once they start to question that, then you won't be able to get it back.
But if you maintain high standards in IT and gain absolute trust from your coworkers and administration, then you can do some amazing things.