​Nearly two million people declared ‘illegal immigrants’ by the National Register of Citizens (NRC) in Assam in August 2019. Among them, the authority declared a greater number of women are illegal immigrants or foreigners. The women are most vulnerable in the NRC process. They have to furnish the legacy document which proves a valid relation with her father or husband who is an Indian citizen. This document has to be submitted to the NRC authority to prove her Indian citizenship status. In most cases, older women who did early marriages failed to submit their legacy document for the update. In most cases of them, during that time, post marriage certificates were not used to be, and many lost their educational proofs which act as legacy documents. Particularly in rural and semi-urban areas, women and their families in earlier time ignored to maintain documents which can be a proof of relation with her husband or father. Upon failure to submit document to the authority by default declares as non-Indian citizen. Even changes in titles and geographical migration after marriage leave women as the most vulnerable victims in the NRC process. It easily subjected them as an illegal immigrant or foreigner in Assam for the slightest deviation of their names and surnames in post marriage documents. The Assam police had arrested such women under the instructions of the Foreigner Tribunal to be placed in a detention centre. Those who contested in judiciary to prove their Indian citizen, because of its lengthy process and money consuming, many cases discontinued. Many times, when a husband was declared a foreigner or illegal immigrant of the state, by natural process that too implied on his wife even may she has proof of her Indian nationality. But unabated violence and harassment continues today on women in Assam on charges of illegal immigrants or foreigners.