Compared to most countries, crime in Cuba is quite rare. Petty crimes, such as pick-pocketing and street hustling, do occasionally occur. Care should be taken against thieves or hustlers in crowded places, like tourist areas, public buses, discos, bars and theaters.
As a general rule of travel, carry only a copy of your passport and lock the original document and all other valuables in your hotel safe. Avoid carrying excessive sums of money with you (or wear a secure money belt if you do), try to avoid wearing showy jewelry, and keep an eye on any expensive items, like cameras. Always try to avoid leaving valuables in your luggage, especially in hotel rooms or airports. When flying, try to keep valuable items in your carry-on luggage.