You may or may not have noticed it, but more and more credit cards have an EMV chip, in addition to the magnetic stripe. The reason for this change is that starting October 1, 2015, banks that due not issue smart cards and merchants that do not accept them have an increased risk that they will be forced to bear the cost of fraudulent transactions. EMV chips eliminate the possibility of easily copying a credit card with only a magnetic stripe.
Unfortunately, criminals are smart and they adapt. The new cards do not eliminate many other types of credit card fraud that have become prevalent, and they do nothing to secure online transactions. The following video highlights the problems with the new credit cards:
For more details on the new credit card system see 8 FAQs about EMV credit cards and FAQ: What you need to know about chip-embedded credit cards.
October 19, 2015: For a related article see X-Ray Scans Expose an Ingenious Chip-and-Pin Card Hack.