The Army's "Shadow" unmanned aircraft system may be vulnerable to cyberattacks, according to the latest annual report by the Pentagon's director for operational test and evaluation. Though the RQ-7BV2 Shadow is "survivable in the presence of older, less capable electronic warfare threats," further testing is required to determine the aircraft's performance in the presence of more sophisticated weapons, J. Michael Gilmore wrote in the fiscal year 2014 report, released last week. The report added that cybersecurity testing -- which took...