Payment cards. For questions about storing credit card numbers, see also pci-dss. For questions involving the physical object, see also smartcard (if the card has a chip).

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1answer
80 views

My app is asking for card details, but does not stores them. Do I need PCI compliance?

I plan to build an Android/iPhone app. The app will contain a few forms and status screens. One of the screens will ask the user for their card details. Once they'll click submit they'll be sent over ...
5
votes
3answers
211 views

NFC contactless payment security

This is really bugging me. Up until recently debit cards with an electronic chip were the most popular electronic form of payment available in Poland (I'd wager that in other European countries as ...
-6
votes
1answer
127 views

Is www.cheap-lingerine.com safe to use my credit card on? [closed]

I want to make sure my information is safe. This website is openly china-oriented but says to secure card information with Secure Sockets Layer technology (SSL) on those pages that involve sensitive ...
1
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2answers
104 views

Are input fields that don’t have name=“” sent via the browser [closed]

Are input fields that don’t have name attributes susceptible to MITM attacks (w/o SSL) or any other attack? For example: <form action="" method="post"> <label ...
0
votes
1answer
90 views

Credit card fraud preventions [duplicate]

Ok lets say some one have clone my debit card here in Greece all debit cards have and stripe and chip and lets say in a way he knows my pin and all my information and he put the info on a blank card ...
2
votes
1answer
150 views

Why recommend “letters, numbers, and special characters” in a User ID?

Why do some sites recommend "letters, numbers, and special characters" in a username or User ID? When creating a User ID at the www.discovercard.com website, the "User ID Strength" indicator meter ...
0
votes
2answers
122 views

Does changing credit card numbers provide better security over time?

I've always contacted my bank and credit card provider every year and simply asked to change my credit card number itself (and get a new card). They do so without a hassle and I feel more secure in ...
1
vote
1answer
126 views

I left my debit card unattended — how exposed am I?

I yesterday visited a restaurant I usually visit, but it seems that after paying with my debit card, I accidentally left it there. Today (almost 24 hours later) I had realized that I didn't have it ...
0
votes
1answer
511 views

What can a hacker do with a card number without CVV? [duplicate]

From my experience a card can not be used for online payment without a valid CVV, then why is it still always emphasized that card number must be protected? What can a hacker do, assume that he has ...
1
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2answers
68 views

Isnt the 3D secure system essentially completely ineffective in avoiding fraud?

3D secure is a system where, after you enter your credit card details on a merchants site, you are redirected to a site hosted on the bank servers where you enter a OTP sent via SMS to complete the ...
1
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2answers
72 views

pci compliance and temporary files

Does storing temporarily a non-encrypted file containing some PANs violate pci requirements? (for example because it is being processed by an application, or to open it on a file editor)
3
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2answers
139 views

How do credit cards with chip+pin securely allow recurring transactions?

In Europe most cards use a chip+pin system to secure the card information. You put the card in te machine and enter a PIN number to decrypt the card information which is stored on the chip. ...
1
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2answers
170 views

What Can I Do While I'm Waiting for “Chip and Pin” Credit Cards?

For the second time in 8 weeks, one of my American Express (AMEX) card numbers was stolen. I do use the card online, but only at reputable (and SSL/TLS enabled sites). I use it in the real world, ...
41
votes
4answers
9k views

Detecting skimmers and other ATM traps

This question has been bothering me ever since I first heard of ATM skimmers: Instances of skimming have been reported where the perpetrator has put a device over the card slot* of an ATM ...
0
votes
0answers
56 views

How can a website charge my credit card when I entered an incorrect CVV? [duplicate]

I just created a free account on Pluralsight.com and entered my credit card details, but I entered my CVV incorrectly. How can they charge a payment to my credit card even though I entered an ...
2
votes
1answer
167 views

EMV(Chip) Cards - What's the point of having the chip card communicating directly to the authorising server? & Clarification of CDA in EMV

Ok I understand from my research that the Chip Card creates an AC Key(MasterKey+AccNumber) to communicate with the authorizing server securely (3DES key to have encrypted communication) but I don't ...
3
votes
3answers
885 views

What are some cards that are vulnerable to RFID theft?

I heard that some credit cards are vulnerable to RFID scanning and thus identity theft. I am concerned about my cards and I would like to learn which cards are vulnerable to such abuse? Are any of ...
1
vote
4answers
775 views

Storing CVC / CVV / CVV2 until payment is processed

I need to store the payment info of a transaction. We have a script that reads which transactions haven't yet been sent to our ERP (the business management software), to then send it. This script ...
2
votes
2answers
112 views

What's the point of EMV when only the card is needed to shop online?

In many countries, EMV is used to prevent credit and debit cards being cloned. But given that it's possible to perform online transactions using the details printed on the card, how does it add ...
6
votes
4answers
741 views

How can my bank debit card reader know that my pin is valid?

Why do ATMs accept any PIN? states that the ATM does not know my pin and the pin is not on the card as well. My bank has this system: It works in 5 stages: I enter my debit card number on the ...
1
vote
2answers
116 views

Why is filling up at the gas pump require a quick scan of the Credit/Debit card?

Always wondered about this. I had a friend tell me it's to make sure your information can't be stolen as easily on the credit card, but I will admit I am a bit skeptical of his claims. At most gas ...
2
votes
1answer
109 views

How much information is released when paying with a debit card

How much information is released when paying with a debit card? Is it possible for a vendor to grab your name and address from your debit card and send you things in the mail?
12
votes
4answers
7k views

Is Visa PayWave secure?

Recently (well, a few months or even a year ago), my bank, here in Australia, introduced this PayWave technology to their Visa debit cards. They claim it's secure, but all they talk about is their ...
0
votes
3answers
459 views

How can I protect my eCommerce site from stolen credit cards?

The case would be that someone with stolen credit card registers on my site, and uses the stolen credit card details to purchase services through my site. How can I protect my eCommerce site from ...
5
votes
4answers
602 views

How can I convince my customers not to send Credit Card data over email?

My wife and I run an online business. For a long time we would accept credit cards over our website, and cash or bank drafts in person. However, as time went on my wife picked up the Square to process ...
1
vote
1answer
250 views

is it illegal to share customer credit card data

I have an app where users can enter credit card data and it is stored using a 3rd party toservice like BluePay or Authorize.net, I do not and will not save it in my system. Trying to get this point ...
0
votes
2answers
195 views

How do gift card resellers prevent sellers from re-using pin and card numbers

There are multiple gift card reseller sites that buy your gift cards and resell them at discounted price. I was wondering how these sites prevent sellers from reusing the pin and card number after it ...
1
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2answers
67 views

Security of Shared Corporate Credit Cards

We are a medium sized company. Recently, one of the representatives of the finance department raised a question about the use of credit cards to shop on-line among different departments in our ...
3
votes
5answers
2k views

Is it ok to cut some digits from the front-face of a credit/debit card?

I'm a European expat living in Asia. I usually hide my credit card at my apartment. However, I'm a bit scared about losing it when I carry it (wallet robbed or lost). That's why I already scrubbed ...
0
votes
2answers
100 views

Can website see my payment information?

So I decided to purchase a service in website which only accepts payments where I need to enter my debit card information. Now connection is secured with TLS 1.0, so no 3rd party can observe my ...
3
votes
1answer
160 views

How easy is it to make a malicious bank/identity card?

I recently got a magnetic card reader that plugs into my computer because I was bored. I decided to scan my ID and bank card through it and I was surprised to see my ID number/bank card number show up ...
6
votes
4answers
4k views

Is a 3 or 4 digit CVV enough for online transactions?

Background: The CVV/CVV2 number ("Card Verification Value") on a credit card or debit card is a 3 or 4 digit number printed on the card. It is 3 digits on VISA, MasterCard and Discover branded credit ...
2
votes
0answers
79 views

Should I cancel my current credit card because of heartbleed vulnerability? [duplicate]

I recently looked at my local credit union bank and they said that their site is not vulnerable to heart bleed. However, I have used my credit card in many websites such as grubhub, amazon, some ...
4
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2answers
128 views

Are invalid card numbers under PCI compliance

If a merchant sends an invalid card number to the bank, will the bank have to secure the information to be PCI compliant?
2
votes
1answer
64 views

How to protect myself from future fraud? [closed]

Recently, I had my credit/debit card from my bank "stolen." The thieves somehow got my card number and information and took quite a bit of money from my account. Fortunately, I was able to recover it ...
0
votes
1answer
156 views

Is it safe to recycle unshredded credit card receipts?

Is it safe to recycle unshredded paper credit card receipts? Can identity theft be helped by data disclosed on most vendor's receipts?
0
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1answer
106 views
2
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4answers
512 views

Storing credit cards to use for purchases on customer's behalf

My client physically makes online purchases (through various websites) on his customer's behalf using their credit cards. His clients have basically said "here's my credit card, buy what you need to." ...
0
votes
3answers
693 views

Bank cards - chips vs mag stripe security

In this thread: Why are chips safer than magnetic stripes? the answers all seem to be that the chip cards are far more secure and difficult to copy. Here is my problem, and my question. A couple of ...
145
votes
5answers
26k views

Why are chips safer than magnetic stripes?

After the recent Target hack there has been talk about moving from credit cards with magnetic stripes to cards with a chip. In what ways are chips safer than stripes?
3
votes
1answer
137 views

PCI Complient Storing Credit Card Data On Offline Tablet

I have a client that does work in rural areas where there are no cellphone or internet connections. They need a way to take credit card information in the field, bring it back to their office where ...
4
votes
4answers
1k views

How to spoof an ATM transaction?

About 20 years ago, a man disappeared, but his ATM card was "supposedly" used the day after the disappearance. However, surveillance footage of the store shows no-one in the store physically used the ...
0
votes
1answer
149 views

How secure are credit card readers? [closed]

Can the data be easily intercepted when (or after) the card is swiped? My main concern is at a trusted vendor. There are two possibly different situations: 1) a typical point of sale scanner with a ...
4
votes
3answers
605 views

What are the security implications of a device like Coin?

Coin is a new device aimed at replacing up to 8 credit cards in your wallet with a single device. It apparently works by scanning the credit card data into a mobile application that syncs with the ...
27
votes
4answers
3k views

Convince the company not to store credit card numbers in our webapp

The company I work for needs a system to perform monthly credit card charges to customer accounts. Customers will be able to update their credit card information from an online interface written in ...
2
votes
1answer
2k views

How safe is the new iOS Keychain that stores credit card numbers?

iOS7 includes iCloud Keychain which syncs your stored passwords across devices. Not only that but it also syncs credit card numbers. The only information I can find about encryption is that they are ...
2
votes
3answers
109 views

Are there any reasons to be concerned about the security of “Coin”? [duplicate]

I just came across this: https://onlycoin.com/ A credit-card sized device that not only holds the info for as many credit and debit and membership cards as you want (they claim) but also can ...
0
votes
1answer
368 views

Is it possible that the same VISA debit card numbers could be issued to different people by different banks? [closed]

I'm wondering if is it possible that the same VISA debit card numbers could ever be issued to different people by different banks or companies?
2
votes
1answer
371 views

Is it OK to generate a token for a credit card without the user's permission? Is that PCI compliant?

Is it PCI compliant to generate a token for every card used for processing, regardless of whether the client asked for his card to be saved or not?
1
vote
1answer
271 views

Is it possible for a NFC-enabled device to emulate a Visa card with PayWave?

If someone has access to the physical Visa card (and with that comes the number on the front, the expiry date, and three digits on the back) would it be possible for them to program a NFC-enabled ...