5G is emerging to serve as a platform to support networking connections for sensors and vehicles on roads and provide vehicle-to-everything (V2X) services to drivers and pedestrians. 5G V2X communication brings tremendous benefits to us, including improved safety, high reliability, large communication coverage, and low service latency. On the other hand, due to ubiquitous network connectivity, it also presents serious trust, security, and privacy issues toward vehicles, which may impede the success of 5G V2X. In this article, we present a comprehensive survey on the security of 5G V2X services. Specifically, we first review the architecture and the use cases of 5G V2X. We also study a series of trust, security, and privacy issues in 5G V2X services and discuss the potential attacks on trust, security, and privacy in 5G V2X. Then, we offer an in-depth analysis of the state-of-the-art strategies for securing 5G V2X services and elaborate on how to achieve the trust, security, or privacy protection in each strategy. Finally, by pointing out several future research directions, it is expected to draw more attention and efforts into the emerging 5G V2X services.

中文翻译：

---

5G 车联网服务：为安全和隐私做好准备

5G 正在成为一个平台，以支持道路上传感器和车辆的网络连接，并为驾驶员和行人提供车对一切 (V2X) 服务。5G V2X通信给我们带来了巨大的好处，包括提高安全性、高可靠性、大通信覆盖范围和低服务延迟。另一方面，由于无处不在的网络连接，也给车辆带来了严重的信任、安全和隐私问题，这可能会阻碍 5G V2X 的成功。在本文中，我们对 5G V2X 服务的安全性进行了全面调查。具体来说，我们首先回顾 5G V2X 的架构和用例。我们还研究了 5G V2X 服务中的一系列信任、安全和隐私问题，并讨论了 5G V2X 中对信任、安全和隐私的潜在攻击。然后，我们深入分析了保护 5G V2X 服务的最新策略，并详细说明了如何在每个策略中实现信任、安全或隐私保护。最后，通过指出几个未来的研究方向，预计将吸引更多的注意力和精力投入到新兴的 5G V2X 服务中。