E-commerce at Risk?

I came across an article that points out a potential flaw in the security of online transactions. It also illustrates one of the current uses of mathematics that is designed to protect those transactions. I do plan on continuing to buy things online until I hear otherwise. However I always told my students that, when someone says that a code or system is totally safe, that it isn't necessarily true. What man puts together, man can take apart and sometimes man can make an honest mistake.

Here is the link.