The Portland Police Department provides lots of information about crime prevention. We can also schedule an officer to speak to your group about crime prevention.
Crime Triangle
Most crimes are not well planned by the offender. Crime prevention works because it removes one of the three necessary elements of a crime--a criminal, a victim, or an opportunity. Remove one of the elements and you have prevented the crime. The vast of crimes are crimes of opportunity.
SCAMS & FRAUD
Information about current scams and fraud schemes is available on the Federal Bureau of Investigation (link) website.