The progress of metaoptics relies on identifying photonic materials and geometries, the combination of which represents a promising approach to complex and desired optical functionalities. Material candidate options are primarily limited by natural availability. Thus, the search for meta-atom geometries, by either forward or inverse means, plays a pivotal role in achieving more sophisticated phenomena. Past efforts mainly focused on building the geometric library of individual meta-atoms and synthesizing various ones into a design. However, those efforts neglected the powerfulness of perturbative metaoptics due to the perception that perturbations are usually regarded as adverse and in need of being suppressed. Here, we report a perturbation-induced countersurveillance strategy using compound nanosieves mediated by structural and thermal perturbations. Private information can be almost perfectly concealed and camouflaged by the induced thermal-spectral drifts, enabling information storage and exchange in a covert way. This perturbative metaoptics can self-indicate whether the hidden information has been attacked during delivery. Our results establish a perturbative paradigm of securing a safer world of information and internet of things.

超光学的发展依赖于识别光子材料和几何形状，两者的结合代表了实现复杂和所需光学功能的一种有前途的方法。实质性候选人的选择主要受到自然可用性的限制。因此，通过正向或反向方式寻找亚原子的几何形状在实现更为复杂的现象中起着举足轻重的作用。过去的工作主要集中在建立单个元原子的几何库并将各种元原子合成到设计中。但是，由于人们通常认为摄动被认为是不利的并且需要加以抑制，因此这些努力忽略了摄动超视学的强大功能。这里，我们报告了由结构和热扰动介导的使用复合纳米筛的扰动引起的反监视策略。感应的热光谱漂移几乎可以完全隐藏和掩盖私人信息，从而可以秘密地存储和交换信息。这种摄动的元光学可以自我指示隐藏信息在传递过程中是否已受到攻击。我们的结果建立了一个扰动的范式，以确保更安全的信息和物联网世界。