f(x) Amber has recently been hacked on Facebook and has given a warning to her hacker.

On August 14, Amber posted on her twitter, "To whoever hacked my Facebook, don't do it again. It's rude and unnecessary. Don't spoil the fun for everyone else," and warned her hacker.

After realizing her Facebook was hacked, Amber was able to stay calm and give off a fair warning to her hacker.

SM Entertainment stated, "It is true that her Facebook has been hacked and the tweet was written from Amber herself."

On the other hand, f(x) has recently released their new album, Pink Tape.