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

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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'.�