On December 29, f(x)'s Krystal put up a brief, but a bold message of warning to hackers on her Instagram.

She has changed the description of her Instagram page to read, "STOP HACKING", indicating that she has suffered numerous occasions of people attempting to hack her SNS account.

Back on December 8, singer Byul's SNS was hacked, while in October, WINNER's Kim Jin Woo also suffered from a hacking incident. We hope netizens stop causing celebrities displeasure from hacking their accounts/devices.

Meanwhile, Krystal is currently appearing in tvN's 'Prison Playbook'.