Proper security can only go so far when you use public computers. Keeping your own system up to date is important and exercising caution when using public systems is important as well.
From the L.A. Fbi branch:
“Tandiwidjojo admitted that he hacked into approximately 60 computers inside business kiosks…After hacking into the computers, Tandiwidjojo installed malicious software that allowed him to intercept data, such as credit card information from customers who used the business kiosks. The malicious software transferred the stolen customer data to a website Tandiwidjojo controlled. Tandiwidjojo then used this information to fraudulently make charges to the stolen credit card accounts.”