There have been reports of petty crimes in Peru, but notwithstanding it is still a popular tourist destination with millions of people visiting yearly. Some precautions to take when in a new country are: you should use official taxis, stick to popular tourist areas; get a tour guide; avoid isolated places at night. It is also advisable to have a hotel booked.To avoid getting counterfeit money, if you need to exchange money, it is advised that you do that in banks and hotels, as these are reputable places.