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Last week, North Korea’s Committee for the Peaceful Reunification of Korea warned South Korea’s “reptile media” that the North was prepared to conduct a “sophisticated strike” on Seoul.

Lim Jong-in, dean of Korea University’s Graduate School of Information Security, said North Korea was probably responsible for Wednesday’s attack.

“Hackers attack media companies usually because of a political desire to cause confusion in society,” he said. “Political attacks on South Korea come from North Koreans.”


Associated Press writers Foster Klug, Youkyung Lee and Hyung-jin Kim in Seoul, Matthew Pennington in Washington and Martha Mendoza in San Jose, California, contributed to this report.