A fraudulent activity is deliberately deceitful, dishonest, or untrue. 欺骗性的
adjective [原级]欺诈的,诈骗的
As is announced in the papers, our country has launched a largescale movement against smuggling and fraudulent activities in foreign currency exchange deals. 据报道,我国开展了一场大规模的打击外汇交易相关的走私和欺诈活动的运动。