5G refers to the 5th generation of mobile phone wireless network capability. With this new iteration of mobile technology, 5G is expected to be in use for at least another couple of decades until 6G technology is developed.
This generation of networks used an updated KASUMI block cipher to improve network infrastructure security.
5G cybersecurity offerings will include international mobile subscriber identity (IMSI) https://www.upguard.com/blog/encryption, known in 5G networking as the Subscription Permanent Identifier (SUPI).
One of the issues with IoT devices is that they currently connect to 5G using existing 4G network infrastructure.