随着移民局打假的不断深入，越来越多的无辜的签证持有人收到了移民局准备取消签证的NOICC notification of intention to consider cancel 的信。 根据移民法，这种情况举证的责任在移民局。移民必须证明你确实违法的签证规定或者给移民局提供了假的信息或者假的材料。否则不能取消你的签证。
The authority for this proposition is Zhao v Minister for Immigration & Multicultural Affairs  FCA 1235, where the Federal Court opined as follows:
The decision-maker, acting under s.116, must be satisfied of one or other of the matters set out in that section before the visa can be cancelled. That state of satisfaction is a real state of satisfaction which must be reached on a consideration of the available material. A visa cannot be cancelled simply because the visa holder has failed to show cause why it should not. … A visa cannot be cancelled because the decision-maker has identified a possible ground of cancellation which the visa holder has not been able to rebut.