Organized Crime Prevention Act Article 11

The identity of an informer referred to in Article 10 shall be kept confidential.The Public Prosecution and the Police Force shall seal and keep the identification details of an informer in safe custody. The said information shall be kept isolated and not be disclosed as part of any evidence for judicial examination.Any public official who has disclosed or revealed the identity of an informer or any information or particulars capable of identifying the informer shall be punished with imprisonment of not less than one year but not more than seven years.
中文原文 組織犯罪防制條例第11條
前條檢舉人之身分資料應予保密。
檢察機關、司法警察機關為保護檢舉人,對於檢舉人之身分資料,應另行封存,不得附入移送法院審理之文書內。
公務員洩漏或交付前項檢舉人之消息、身分資料或足資辨別檢舉人之物品者,處一年以上七年以下有期徒刑。

English translation for reference only; the Chinese text prevails. Not legal advice.