South Korea's Naver said on Friday it is exploring various options including the potential sale of its stake in the company that controls LY, which operates the popular messaging app Line.

In a statement, Naver, which holds an equal stake with SoftBank in a joint venture that controls LY, apologized for a recent security breach that led the Japanese government to issue administrative guidance.

"Naver will continue to put top priority on Naver shareholders and on raising the corporate value of Naver and LINE Yahoo," it said in a statement.