If you are concerned that someone you know is being hazed, you can make a difference by helping that person.
The demands of hazing often isolate students from their friends who are not in the group. By having a friend who is outside of the group provide support, the person who is hazed can think more clearly about what options are available. See If You Are Hazed for insights into the experience of someone who is hazed.
If you are concerned about someone who you suspect is being hazed, you can also talk to university staff members for advice about how to support. You can also make a phone report to a university staff member about your concern.