Credit card fraud

The bad news is that someone has tried to use my credit card fraudulently. The good news is that the Card company were aware enough of my buying habits to query it. The card is now cancelled, but I am left with an uneasy feeling about using cards. To date, I have only heard about such troubles; when they come to your door it feels very different. Anyway, what would I be doing flying round the world first class? Yes, it was almost that much money.