Hawaii is generally a safe tourist destination, but it's still wise to follow the same common-sense safety precautions you would normally follow in your own hometown.
Be wary of those hawking "too good to be true" prices on everything from car rentals to attractions. Many of these offers are just a lure to get you in the door for time-share presentations. When handed a flier, read the fine print before you make your decision to participate.
Transportation Security Administration (www.tsa.gov.)