JoongAng Ilbo cyber attack

In June 2012 the South Korean newspaper JoongAng Ilbo(중앙일보) was hit by a major cyber attack (해킹, 차원 다른 악의적 수법으로) which attempted to destroy the papers article database, editing and distribution system. News reports indicate that this attack was likely carried out by North Korean state actors and follows a threat made by North Korea earlier this year against several South Korean news outlets. In addition the attack left the following image on the paper's website joongang.co.kr

The text in yellow is a message from the hackers written using SQL and is as follows .

select count (*) from tbTarget // 1000000
select domain, d-day, method from tbTarget WHERE seqnumber = 2048 //www.joongang.co.kr, 2012-06-09, APT
select domain, d-day, method from tbTarget where seqnumber = 2049 //???.??????.???,2012 -??-19,???? < br /> select domain, d-day, method from tbTarget where seqnumber = 2050 //???.?????.???,2012 -??-29,??
select count (*) from tbHacker // 10000
select name, birthday, sex from tbHacker where age < 5 //IsOne, 2011-06-09, woman

There is a purported SQL query followed by the supposed result. This is threatening further attacks on the 19th and 29th day of an unknown month in 2012. The hacking group is calling itself "IsOne".