Quatro Barras is a small city in Brazil that generally boasts a peaceful and friendly atmosphere. However, it's important to remain cautious as small incidents of petty crime such as bag-snatching and pickpocketing have been reported. Like any other place, it's recommended to avoid walking alone at night and stay in well-populated areas. Use common sense, and remember to use the same sort of care and precautions as you would when traveling anywhere else.