A modern urban infrastructure no longer operates in isolation, but instead, leverages the latest technologies to collect, process, and distribute aggregated knowledge in order to improve the quality of the provided services and promote the efficiency of resource consumption. This technological development, however, manifests in the form of new vulnerabilities and a plethora of attack vectors. In the same context, the ambiguity of ever-evolving cyber threats and their debilitating consequences introduce new barriers for decision-makers. Therefore, cyber situational awareness of smart cities emerges as a mission-critical task that requires support methods for effective and timely decision-making. In this article, we investigate the threat landscape of smart cities, survey and reveal the progress in data-driven methods for situational awareness and evaluate their effectiveness when addressing various cyber threats. We draw several potential research directions that aim at advancing cyber situational awareness in the context of smart cities.

现代城市基础设施不再孤立地运作，而是利用最新技术来收集，处理和分发汇总的知识，以提高所提供服务的质量并提高资源消耗的效率。但是，这项技术发展以新漏洞和大量攻击媒介的形式体现出来。在同一情况下，不断发展的网络威胁的模棱两可及其破坏性后果给决策者带来了新的障碍。因此，智能城市的网络态势感知已成为一项任务关键型任务，需要有效而及时的决策支持方法。在本文中，我们研究了智慧城市的威胁格局，调查并揭示数据驱动的态势感知方法的进展，并评估其在应对各种网络威胁时的有效性。我们绘制了一些潜在的研究方向，旨在在智慧城市的背景下提高网络态势感知。