@ucbalumnus When I lived in Cambridge, I did receive updates from the Harvard emergency service. I lived there for 4 months and received less than 10 messages. Many of them were not crime-related, but about fires and similar such emergencies.
I received another one just after posting this: Strong-Arm Robbery of a woman unaffiliated with Berkeley on Bancroft Way, near Zellerbach
And I understand your last point, but I think many of the victims were unaffiliated with the University or older students, although some of these were freshmen.