Serious question - why do you very concerned if your credit card number is stolen? By law, credit cards have > 30 days (I forget the exact amount) of fraud protection as long as you report it. The only downside I can see is the pain of getting a new card. Your money really isn't at risk.
That said, I do agree that security is becoming a major issue in our world.
That said, I do agree that security is becoming a major issue in our world.