Always check your bill after eating in restaurants and cafes, as there is a huge tourist industry some people will try to add extras to your bill that you did not have. Make a mental note of what you order and roughly how much it should cost.
Be alert at all times and be aware of your surroundings. Take the usual safety precautions so you do not become a targets for pickpockets. Don’t put your wallet or mobile phone in your back pocket. Put any valuables items in a dark colour shopping bag when going out to avoid attention.
Credit card fraud, cloning cards can be an issue be careful where you use your cards. Also if you are withdrawing money from cash machines make sure you cover your pin and be discreet about the amount of cash you withdraw.