Collaborate Disseminate
I’m looking at old receipts and I’m wondering if need to shred them or if I can just toss them in the trash.
Aside from standard information like date and time, my receipts contain the following information:
A reference number (this could… Continue reading What can an adversary do with information from a store receipt?
Someone know how is leaking virtual card numbers?
I have few, but only leaking is for online payments.
Not used is frozen.
That is systematic.
I have a lot extension in Firefox for protection [only safety sources].
On tablet with Android f… Continue reading Leaking virtual card numbers – systemically [closed]
Today my parents got a call from police office that my brother is in a serious problem . they threaten then a lot . At same time my brother number was switched off . For this all my parents sent them approx. 1.5lkh . After this all inciden… Continue reading Is it possible that a fake UPI ID can be generated?
I was not able to add a credit card to Apple Pay on an iPhone. The bank told me that they need the SEID number of the phone to resolve the issue.
By a quick search on the Internet, I learned that the SEID number is an identifying number of… Continue reading Are there any risks sharing my phone’s SEID number with the bank of my credit card?
What are the risks arising when it is possible to take screenshots of payment apps, mobile banking apps etc.? User ID can be stolen. Any other risks?
Continue reading Risks arising from the ability to take screenshots of payment apps [closed]
I would like to better understand the mechanism of rotation of EMV keys used for payment cards.
Assuming that it intends to provide a rotation of the keys used for the production cards:
just recycle the keys under Master Key and get a new… Continue reading Rotate or replace EMV keys?
I would like to know exactly what data points mobile wallets send to the payment terminal over NFC.
I’m aware that mobile wallets usually send a virtual credit card number in lieu of the physical credit card number. Do they, however, send … Continue reading What kind of information do Mobile Wallets share with the terminal?
On my website, there is a store. The store uses CouchCMS to display the pages and store information about the items available for purchase. There is a purchase button on the item page that allows you to purchase that item, here is its code… Continue reading How do I stop users from changing the price of items in my shop? [migrated]
With 15 courses in this e-learning bundle, you could study tax prep, QuickBooks, and more, all at your own pace with complete lifetime access. Continue reading Learn About Business Accounting and Taxes for Just $30
I need to use the CVK Key (in key block format) to calculate the CVV2.
In the past, I have always used single keys in variant format for this purpose (CVKa + CVKb), and the calculation procedure is standard (there are also many online calc… Continue reading CVV2 calculation with TR-31 Key