Energy infrastructure is a tempting target for hackers, and the trans-Alaska pipeline is no exception. Cyberattacks have doubled in the last five years, experts say. A successful cyberattack could interrupt the flow of oil down the pipeline. The FBI issued a warning that sophisticated cyberattackers have targeted the U.S. energy sector. Cybersecurity is the No. 1 thing keeping energy executives up at night, if it isnt already, says Jim Guinn of Accenture.”]