Credit Card FAQ - Credit Card Security And Authentication

by: Joseph Kenny

With the ever rising reports of credit card fraud, fraudulent use, internet phishing and identity theft, people are rightly concerned about credit card security. Fraudulent credit card use can be an annoyance at best, and seriously damage your credit at worst. It's only reasonable that people have questions about credit card security and authentication methods. Here are some of the most frequently asked questions about credit card security.

1. How does the ATM or store terminal know my PIN number?

PIN (personal identification numbers) are the most often used way to authenticate your identity when you use your credit or ATM card. When you first choose your PIN number, it is 'encrypted' - stored in a secret code of letters and symbols - and either stored in a database or on the magnetic stripe on the back of your card.

2. If my PIN number is stored in a database, doesn't that mean that bank or credit card employees have access to it?

The encryption method that's used by ATM and credit cards is called 'one-way encryption'. It makes it easy for the bank's computer to verify the PIN given the bank's key and the PIN, but nearly impossible to extract the PIN in text form from the encrypted database.

3. How does the machine 'read' my card?

The stripe on the back of your credit or ATM card is called a magnetic stripe. It's actually made up of thousands of tiny magnetic iron-based particles. The card can be 'written to' much the same way that the hard drive on your computer can be written - by means of magnetic interaction changing the charge. Written into the stripe are your account number and identifying data. When you swipe the card, that information is read and sent via modem to an 'acquirer' - a company that 'acquires' a payment guarantee from the credit card company based on the information stored on your card's magnetic stripe.

4. Isn't buying on the internet dangerous and insecure?

Honestly? Your credit card information is in less danger being transmitted over the internet than it is when you hand your card to a store clerk at the counter. The real danger to your credit card information isn't from hackers hitting online merchants, or stealing your credit card information via modem or phone lines. The real internet security dangers come from two different directions:

a. Hackers using back doors to get into the records of banks, credit card companies and data repositories.

This is the biggest danger. It's also a danger for stores and companies that have records 'online' for billing purposes. There's a great deal being done to improve security of data repositories, which are far more vulnerable than any data transmission stream.

b. The second big credit card security danger is the practice that's sometimes called 'phishing'. In this case, the credit card thieves trick you into giving them your identification and credit card data. They may do this with an email purporting to be from an official of your internet service provider or email, your credit card issuer or anyone else. They also may build sites that are identical to sites like Paypal, American Express and others for the express purpose of capturing your information so that they can use it.

5. How do I protect myself from phishers?

First, never provide your social security number or other identifying data to anyone without first verifying that they are exactly who they say they are. Experts recommend that you never use the link provided in an email to go to the site of someone you do business with. Instead, open a new browser window and type in the known address by hand

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About The Author

Joseph Kenny writes for the credit card comparison sites http://www.creditcards121.com/ and http://www.credit-cards-info.com/.

This article was posted on April 19, 2006




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Flexible Payment Mortgages

by: LendingTree Editorial Staff

With most mortgages, your payment is the same every month. But what if your paycheck isn’t so regular? Would you like to be able to vary your mortgage payment depending on your cash flow? An option ARM -- also called a flex-ARM or pick-a-payment loan -- allows you to do just that.

How does it work?

An option ARM is an adjustable-rate mortgage with a twist. You don’t pay a set amount each month. Instead, the lender sends a monthly statement with up to four payment options. You simply choose the amount you want to pay that month and then submit your payment.

The options vary, but here’s the most common menu:

Minimum payment: This is calculated using an “initial” interest rate that can start as low as 1.25 percent. Because this payment is so low, it’s useful for months when you don’t have much cash on hand, perhaps because you are waiting for a commission or bonus check. But any unpaid interest gets deferred, or added to the principal of the loan, so your principal grows.

Interest only: You pay all the interest due, but none of the principal. This doesn’t reduce your mortgage balance, but it allows you to avoid deferring interest.

30-year amortized: This matches the monthly payment of a mortgage amortized over 30 years at your current interest rate. It includes both principal and interest.

15-year amortized: The same as above, but amortized over 15 years. This is the highest monthly payment. Choosing it allows you to reduce your principal faster than any other option.

The fine print

The biggest caveat with option ARMs is that those enticing initial rates are short-lived. The low minimum payments that make these mortgages so attractive can increase dramatically. In addition, every five years, the loan is recast -- that is, a new amortization schedule is drawn up to ensure that the remaining balance will be paid off by the end of the loan’s term. When that happens, the minimum payment can be pushed even higher.

What’s more, if you defer too much interest, you can reach what’s called negative amortization. If your balance grows to 10 percent to 25 percent (depending on state law) greater than the original principal, your loan is automatically recast and you have to start paying the fully amortized rate, which will increase your monthly payments.

Another potential downside of option ARMs is that they’re more complicated than most other mortgages. Home buyers may be seduced without fully understanding how much the minimum payments will increase over the long-term. When the monthly amounts go up, these people can experience payment shock.

To learn more about flexible payment mortgages, visit http://www.lendingtree.com/cec/yourhome/yourmortgage/open-arms.asp

About The Author

The editorial staff at LendingTree is committed to helping consumers become smarter borrowers. Visit http://www.lendingtree.com/cec for more information and tips on buying, selling, and financing a home. Copyright 1998-2006, LendingTree, LLC.

This article was posted on April 19, 2006






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