ABSTRACT. The daily life of modern society is unimaginable without the use of wireless technologies for information exchange. Wireless data transmission is performed using 3G, 4G, LTE, 5G, Wi-Fi and other technologies. For the functioning of the mentioned technologies, it is necessary to use radio frequencies. A limited frequency band, dependence of data transfer speed on the number of users connected to the network simultaneously, the influence of several sources on each other leads to the need to create new technology. A more perfect technology is Li-Fi (Light Fidelity) technology, in which the mentioned problems are excluded. Li-Fi technology is based on the use of light energy, using visible or invisible light to wirelessly transmit information, which is emitted by a light-emitting diode, which enables two-way high-speed connection. In the article presents the architecture of the Li-Fi technology system, the advantages and disadvantages of the technology, it’s characteristics, and areas of use. Are named the types of cyberthreats in the wireless networks. In any technology, it is important to take appropriate security measures to protect against potential dangers, in order to minimize security risks, Li-Fi technology offers data security and privacy advantages than Wi-Fi. It ensures secure data transmission and reliable network operation. In the paper also given the tools and methods of cybersecurity used in Li-Fi technology.