A South Korean civic group has filed criminal complaints over the alleged leak of tax investigation details involving celebrity Cha Eun-woo, warning that unchecked disclosures risk repeating the kind of reputational damage seen in the case of late actor Lee Sun-kyun. The Korea Taxpayers Federation said on Tuesday it had reported a tax official accused of leaking confidential information and the journalist who first reported it to police. The federation said the complaint cites violations of the Personal Information Protection Act and criminal law provisions on disclosure of official secrets. The group said the leak concerned details of a tax investigation into Cha, a member of K-pop boy band ASTRO who is also active as an actor. It said the information could only have been known to tax investigators or officials in the approval chain, raising strong suspicions of an internal leak. “The accused parties unlawfully disclosed specific details related to Cha Eun-woo’s tax investigation, infringing on confidentiality principles guaranteed by the Framework Act on National Taxes and the rig