Questions tagged [credit-card]

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).

0
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3answers
164 views

I have recovered my credit card PAN (6 chars masked) and expiration date on a merchant site, acceptable or not?

I have a credit card saved in X merchant. I only see the last 4 digits in the UI. I have launched a 3D secure payment transaction by using my saved card. Then I have noticed that even in the failed ...
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2answers
76 views

Buying keycodes online safely/anonymously

I lost a cd key for a very old game and need to replace it with a new one. I can't find anymore physical copies to buy, but I found cd keys for them are offered on sites like Ebay which could replace ...
-1
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1answer
230 views

People using my email address (and only that) for booking hotels. What kind of scam is this?

I have faced the same issue twice: 2 people, whose names are definitely not the same as mine, used my email address to book hotels through a well-known hotel company and a lesser-known hotel booking ...
2
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0answers
89 views

Disable Google API key without access to google account

I was trying the new google api - I created anonymous account - added there my debit card, set up the API key for google maps. Tried API and pushed my API key to shared repository (yes I know - my ...
2
votes
0answers
119 views

What are the risks of providing all your credit card information except for security code to a stranger?

I've recently been approached by a person asking me for a donation to Save The Children. while I was inclined to donate, I didn't because they were asking my full name, 16 digits of credit card and ...
2
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0answers
67 views

How can I create a verifiable signature for a digital transaction?

I am currently working on creating a digital signature pad that customers can sign instead of a traditional paper receipt for credit card transactions. Currently I have the ability for them to sign a ...
2
votes
0answers
323 views

Algorithm to generate (and verify) string of 4 quad alpha numeric code

I am writing a system, for which I need to generate unique transaction numbers (which can be verified by myself). I want to use something similar to that used by credit cards, where a string of the ...
2
votes
0answers
613 views

Which keys does a bank typically exchange with a card scheme?

I'm trying to understand the different EMV-related keys that are shared between a bank who issues EMV cards and a card scheme, such as Visa or MasterCard. I understand the bank would typically ...
1
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0answers
79 views

What solutions would you recommend for credit card processing for Virtual Assistants?

I'm developing the entire backend using for an Over-the-phone Virtual Assistant service. Their clients are busy professionals who delegate their online purchasing and booking to this service, which ...
1
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0answers
365 views

Credit card number in credit report. Acceptable or not?

I recently applied to obtain my credit report for the very first time and was taken by surprise when I saw all my credit card numbers mentioned in the report without any masking. I had seen other ...
1
vote
0answers
233 views

Android pay card registration, token generation, and verification

I was trying to find information about Android Pay and how it handles card information when adding it to Android Pay and how are token information verified. I was not able to find detailed information....
1
vote
0answers
179 views

ASP.NET WCF security, javascript and handling sensitive information

I've come upon what I would call some "nasty" javascript coding (I come from a KnockoutJS / Angular / Web API 'world') in which WCF services are exposed to javascript by production URL's, i.e. "...
1
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0answers
141 views

Collecting Pre-Authorized Debit (PAD) & Credit Card (PACC) Agreements Electronically

I am looking for best practices regarding the collection of Pre-Authorized Debit (PAD) agreements electronically. The Canadian Payment Association only seems to provide the following statement ...
0
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0answers
82 views

Store Credit Card data in memory for using with native payment SDKs (iOS, Android)

I am implementing a Credit Card processing in mobile apps for iOS (Swift) and Android (Kotlin) using native SDK (SAQ A EP compliance level) We thought about: disabling clipboard for CC field ...
0
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0answers
53 views

Is there a security issue with fit4less requiring bank information and not simply card number?

When I set up timed payments I tend to prefer setting them up through my credit card. As this tends to be more reliable in case of over charges, etc. For example spotify goes through my credit card. ...