Should I have given out my three digit security code on the back of my visa card over the phone?
953283
Yes.  This verifies that you have the card in your posession.  This prevents anyone with just your credit card number from using it.   If somesone steals your card and uses it, you can always dispute the charges.  I have been victim in credit card theft and it is really no big deal.  The card companies have always taken care of me.
938316
I would never give out my credit card number. For large sums of money, wiring is always safe. I used to work at a bank and often times people would wire large amounts to other countries.
814931
Usually they give you a security question when you first sign up.\nTry and answer that.
125236
I would be highly suspicious. It sounds like somebody is trying to get your credit card number.  If you really win, tell them to send you a check.  Nobody gives a payment to a credit card for real.
1048379
No I would keep it.  If I found it in a wallet with identification however....I certainly would contact the person to return their money and wallet.
694768
Sure you can, with two stipulations.  1) The 3 digit Card Verification Number (CVV) must match what the card issuer has on file and 2) the shipping address must agree with the billing address (Address Verification Service -AVS).\n-MM
812755
My account number is by my sort code on my debit card, but it isnt on all. i would refer to a bank statement if i was you. It is 8 digits long. I work in a payroll office and there can be loads of problems if you get it wrong
1119489
the email that you got is called a 'phishing' email. never, ever reveal details to anyone either via email or telephone. a genuine company will only ask you to confirm your name and address and possibly a password but never anything more personal than that. and to be fair a fraudster could get those details from the phone book anyway (apart from your password that is). if you're unsure then ask them to give you a clue as to your password. the company will not be breaking dpa (data protection act) if they prompt you on your password and that way you can be sure that the caller (or email) is genuine. \nremember, a company who has your bank details etc, already has them so they won't need you to confirm them. you definately DO NOT need to confirm those sort of details for dpa.
974844
I have no idea what the law is, most places only print a portion of your CC number, the last four digits. If not I will scratch out the rest with a pen before I sign. If the clerk makes a fuss, I demand a sale cancellation, destroy the slip and shop elsewhere.
198127
the last three numbers of a seven digit number printed on reverse of card
357314
Pretty brave not using the instruction booklet this late in the game.  If you had, you would know that it includes information on how to find the correct address to send in your return.
328114
That stuff is listed in phone book; as long as you didn't give out info like ss#, bank accts., credit cards, you will probably be okay.  If you are that concerned you can call one of the credit bureaus and ask what their policies are on unusal activity regarding your credit.  If you report it ahead of time this may help you with any liabilities in the future.  Good luck.\n\n I hope you didn't give any bank info to this man.  If so, call your bank tomorrow and explain situation.  Cancel acct. and wait to reopen a different one till you call soc sec..  Call soc sec. office and explain what happened and that your # and info may have been compromised. They will probably have a new one issued to you.
84464
Looks like a dongle protected hack to me! \n\n on the call:\nCX=PASSWORD 1     \nDX=PASSWORD 2\n on the return:     \nCX : 3RD RETURN CODE      \nDX : 4TH RETURN CODE
1169152
your credit card, you sign the reciept
1137829
Never give your financial information over the phone for anyone that is calling you. Hang up and call the credit card company back, the number is on the back of the card.
1070334
NO! do not give any personal information to anyone but your bank. if in question I would ask for names, phone numbers address, managers names, website address and if no reply or they try to sweet talk you out of the information hang up and contact your bank let them figure it out.
304501
No, but I should do. It's one of those things you should always have, like a safety pin (apparently in case your knickers fall down) and a coin for the payphone.