Enforcement Rules for the Act Governing Relations between Peoples of the Taiwan Area and the Mainland Area Article 17

The circumstances where sufficient evidence exists to establish that there is a threat to national security or social stability as prescribed in Subparagraph 5 of Paragraph 1 of Article 18 of the Act shall mean one of the following:1. Failure to disclose previous participation in or funding of groups rebellious against internal or external security, or activities of such groups.2. Failure to disclose previous participation in or funding of terrorist or violent illegal groups or activities thereof.3. Involvement in crime outside the Taiwan Area or being a habitual criminal.4. Conducting any act that has been determined by the competent authority to be a threat to national security or social stability.
中文原文 臺灣地區與大陸地區人民關係條例施行細則第17條
本條例第十八條第一項第五款所定有事實足認為有危害國家安全或社會安定之虞,指有下列情形之一者:
一、曾參加或資助內亂、外患團體或其活動而隱瞞不報。
二、曾參加或資助恐怖或暴力非法組織或其活動而隱瞞不報。
三、在臺灣地區外涉嫌犯罪。
四、在臺灣地區有其他危害國家安全或社會安定之行為,並經有關機關裁處。

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