Which phrase in the following passage refers to the threat of identity theft associated with the Internet?

Martha runs a small retail business. Most of her financial transactions take place online. Last month, Martha’s business fell prey to various internet-related risks and threats. For example, someone got unauthorized access to her computer network, and thus to sensitive information about her business through unsecured connections. Further, someone stole Martha’s personal online data, such as her credit card details, and engaged in illegal activities. To make matters worse, Martha downloaded an email attachment that contained a Trojan horse that infected her computer system. Last, someone used her website’s content without getting prior authorization or permission.

A. someone got unauthorized access to her computer network, and thus to sensitive information about her business through unsecured connections
B. , someone stole Martha’s personal online data, such as her credit card details, and engaged in illegal activities
C. downloaded an email attachment that contained a Trojan horse that infected her computer system
D. someone used her website’s content without getting prior authorization or permission