With the growing numbers of credit card fraud these days the card issuing companies have taken some steps in card fraud detection. Since the companies have a record of all the transactions done through the credit cards by the user they constantly monitor it and try to make out the anomalous transactions.
Large purchases done just after small ones
One way of detecting a credit card fraud is checking the large purchases just after the small ones. If the credit card company notices that there was a large purchase like an LED television just after a small purchase like a Gas or anything then they are alarmed. Generally this is a behavior of a fraudster who makes a small purchase to see if the card is active and then go for bigger purchases.
A large number of purchases in a small period of time
If a credit card records a number of purchases in a shorter period of time then also the credit card is flagged and is suspected to be a victim of a credit card fraud. Whether this was done online or at store but the company people are alarmed due to that.
Checking the customer purchase habit and noting any anomaly
The credit card companies have the complete information about the customer preferences and habits and they keep on tracking the consumer purchases and understand his buying nature. After looking at the past transactions if they note any anomalous transaction which is totally against the buying nature of him then also they may flag the credit card and get alarmed of any fraud.
Thus you can see that the credit card companies put so much effort in keeping your credit card safe and the next time you get a call from the company for a suspicious fraud then do not shout and just understand that they are so much concerned towards the safety!
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