security risk
noun [ C ] uk/sɪˈkjʊə.rɪ.ti ˌrɪsk/ us/sɪˈkjʊr.ə.t̬i ˌrɪsk/
危险事物（或人物）;不可靠分子;隐患
something or someone likely to cause danger or difficulty
The only reason she was considered a security risk was because her husband was a foreigner. 她被认为是不可靠分子的唯一原因是，她丈夫是个外国人。