This presentation covers issues relating to possible threats against the electrical power infrastructure in the United States. The growing worldwide cyber threat can target the Internet-connected computer system of a major electrical power company and wreak havoc. Moreover, as a result of an increase in worldwide connectivity, hackers can exploit systems at fewer dollars: One company received approximately 230,000 unauthorized attempts in one month, of which over 80,000 originated from China. The impact resulted in blocked and logged messages by the company's firewall. The potential adversaries include hackers, criminals, insiders, economic competitors, terrorists, and nation states.