A bank uses a wireless network to transmit credit card purchases to a billing system.
Which of the following would be MOST appropriate to protect credit card information from being accessed by unauthorized individuals outside of the premises?
A. Air gap
B. Infrared detection
C. Faraday cage
D. Protected distributions
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“Which of the following would be MOST appropriate to protect credit card information from being accessed by unauthorized individuals outside of the premises?” That is not how I read it. There are two sentences. The first sentence is that sensitive information is transmitted wirelessly. We don’t know how, or where, or from what distance the antennas are apart. The second sentence is how to protect this wireless transitions from outside the premises? Ok, now we have some idea of where the wireless network is, it’s inside the premises. An example would be some kind of retail building or room that can’t have wires going to the POS (Point of Sale) terminals. A good example is the Apple Store, the sales people walk around with the Credit Card Readers sending customer’s credit cards information through the air. So now the question is, How to best protect those credit card transactions? Out of the 4 options, the best option is a Faraday Cage.
The question is vague and poorly stated. It asks Which of the following would be MOST appropriate to protect credit card information from being accessed by unauthorized individuals outside of the premises?” The first sentence says that the bank transmits the credit card purchases via a wireless network. So we assume that they want to protect the credit card information in transit (outside the premises).
Not A. Air gap is a way to isolate computers – not transmitted data – from the internet and/or other networks.
Not B. infrared detection involves cameras to detect heat and motion.
Not C. Faraday cages are devices that enclose, isolate, and protect systems and data – but in this situation the data is in transit, so outside the premises.
Not D. Protected distribution is a wireline or fiber-optics telecommunication system – not wireless.