1) When taking taxis from an airport to your hotel, travel in the more expensive airport taxis and ensure that the drivers have official identification. Never take a taxi waiting outside the airport grounds.
I know this sounds extreme, but it is by far better to be safe then sorry.
2) When traveling from your hotel to the airport, go with a taxi recommended by the hotel.
Again, taxis can be very dangerous. I cant express that enough.
3) Try not to arrive in a new city or town late at night.
This can just go wrong in a number of ways. It is much easier getting checked in during the day time and security at night in certain areas is just horrendous.
4) Travel in a group if possible.
Since when is traveling in numbers not a good idea?
5) Learn the basics in the local language before you arrive. Don’t expect that people will speak English.
English is becoming more widely spoken these days, but you want to be sure. You should always check on these things before your arrival.
6) Keep your valuables hidden.
A money belt is great if it is an option that you willing to look into. There are many...