Security firm McAfee has published a report that details how a group of computer hackers spent four years spying on the South Korea military.
The paper says the group placed software on government PCs that identified documents containing military keywords like "US army," "north," "weapon" and "defense” in English and Korean and forwarded them to the hackers’ servers.
The hackers network is linked to two hacker groups, the New Romanic Cyber Army Team and the Whois Hacking Team, that launched one of the most destructive cyberattacks on private networks ever, McAfee experts said.
Those hackers — whose true identities aren’t known — destroyed data on a reported 30,000 PCs at South Korean companies in March.
Some South Korean officials blamed North Korea for the March cyberattack.