How secure is my VISA card number and security number?

It depends on how you use it, Never give out these details except to trusted establishements Name on card Number on card, security number on card, never carry your password written down, never use dates of birth etc for passwords, never reveal your date of birth or address to any but the most trusted shops. dont use the same password on websites as on your visa or other bank account.. Always check ATM cashpoints to see if a camera might be installed behind the fascia. Never use your online account from a public pc. Never store your password and visa details on a laptop or thumbdrive. Never let a cashier take your card out of your site. Only use your card in foreign countries at well known banks. Never give out your password to telesales, including tele ops at the bank where the card was issued. Turn off aoto completion of forms on internet explorer, always check a web page for the little closed padlock sign when doing online transactions, it must be present. If you follow these guidelines it is quite safe, but remember if you can prove that you did not make a transaction or that your number has been used fraudulently, then visa cover the bill, i you have beeen prudent with your security and passwords. Mostly the sheer number of cards protects you, its just playing the odds.

cheers