Abstract Smart networks and smart city systems, which are increasing in use with new approaches every day, are now in the investment plan of each state. At many points, these two concepts combine. Industrial Control Systems (ICS), which constitute the infrastructure of these systems, have opened to external networks due to the requirements of the era. Once smart grids are integrated with smart cities, ICS left its isolated structure. This process has emerged more security vulnerabilities. In this study, False Data Injection (FDI) attack was carried out to change the memory address values of Programmable Logic Controller (PLC)s which is an important component of ICS. Initially, the feasibility of the attack was examined. Thereafter, in the event of an attack, the effect on the systems was revealed. Eventually, important software and hardware solution suggestions to prevent the attack are mentioned. Thus, in the possible cyber attacks that may occur, it is aimed to recover critical systems with minimum damage and make them to be operational as soon as possible. It is considered that this study will make important contributions to other studies regarding ICS security.

中文翻译：

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智能系统中的虚假数据注入攻击和内部威胁

摘要 智能网络和智能城市系统每天都在以新的方式使用越来越多，现在已成为每个州的投资计划。在很多时候，这两个概念结合在一起。构成这些系统的基础设施的工业控制系统（ICS）由于时代的要求已经向外部网络开放。一旦智能电网与智能城市相结合，ICS 就离开了其孤立的结构。这个过程中出现了更多的安全漏洞。在本研究中，进行了虚假数据注入 (FDI) 攻击以更改可编程逻辑控制器 (PLC) 的内存地址值，这是 ICS 的重要组成部分。最初，检查了攻击的可行性。此后，在发生攻击时，系统会受到影响。最终，提到了防止攻击的重要软件和硬件解决方案建议。因此，在可能发生的网络攻击中，旨在以最小的损失恢复关键系统并使其尽快投入运行。认为本研究将对其他有关ICS安全的研究做出重要贡献。