# 6G Mobile Networks: Key Technologies, Directions, and Advances
## 6 Implementation of Security in 6G Network  
In this section, we talked about the implementation of security in the 6G network--the state of being free from danger or threat. Here we talked about the need for changes required in the security of 6G compared to the era of 5G [72]. The security challenges and solutions are also discussed with the changing technologies. The developers of a sixth generation (6G) of wireless connections have already entered the conversation, even if the fifth generation (5G) wireless networks have yet to be fully explored. Consequently, we examine whether privacy might affect the anticipated 6G connectivity and potential difficulties involving various 6G technologies, as well as the underlying outcomes, in order to unite and strengthen overall safety in 6G networks. With the supplied 6G network framework as the foundation, we present our concept for 6G security and safety key performance indicators (KPIs). Additionally, we discuss the privacy issues that might arise with the 6G circumstances and implied 6G procedures that are currently accessible [73]. We additionally provide the audience with a few insightful details regarding exploratory devices and standardised standards pertinent to 6G protection. In this article, we specifically address security problems related to 6G enablers such as distributed tally technology (DLT), physical layer security, distributed AI/ML, visible light communications (VLC), THz, and quantity computing. This study aims to provide informative assistance for such later investigation of 6G secure during this initial stage of sight toward actuality, one by one [74]. Additionally, 6G processes have certain weaknesses. Generally, linked robotic & autonomous devices use VLC technology and artificial intelligence to compute, which could be troublesome for savage behaviour, cryptography, and data transfer. The molecular communication network, the THz technology, and the quantity communication network are all used in multi-sensory XR activities, making them vulnerable to user access assaults and violent behaviour, including data transfer exposures. Multisensory XR operations are used in a similar manner as wireless brain-computer relationships, although they have different security issues. The two primary faults are cruel conduct and encryption. The distributed tallying and block-chain techniques, which are the last 6G network activities, are quite secure, although they may continue to be the subject of malicious activity [75, 76]. In order to allow entirely autonomous networks, 6G uses AI calculations. As a result, 6G would be impacted by assaults on AI technologies, particularly Machine Learning (ML) systems. Underlying security vulnerabilities against ML systems include poisoning attacks, data injection, modification of data, sensing corruption, modelling elusion, modelling inversion, modelling birth, and category conclusion assaults. Additional characteristics enable AI systems to function more effectively. Due to the fact that drug addicts are typically not able to see how their information is processed, assaults on acquired data and the inadvertent use of private information can cause severe problems. Blockchain is another crucial technology to enable 6G systems in the future. Blockchain is appropriate for decentralised resource management, distributed information sharing, and the provision of services in 6G networks that are primarily big and dispersed. With enough machines, it is possible to launch 51 assaults and bring down the blockchain. Sequester maintenance is difficult since blockchain networks retain data closely. The present 5G specification relies on classical encryption, such as elliptical wind cryptography, instead of addressing security challenges brought on by quantum computing. The 6G network will witness the existence of a significant number of computers, making the current security methods based on asymmetrical critical cryptography susceptible to assaults based on large numbers of machines.