IPv6 is Internet Protocol Version 6. Every device that connects to the internet uses its own IP address. For a long time, most of the internet has connected using IPv4, or Internet Protocol Version 4. When the internet started to run out of IP addresses computer system professionals began planning the move to IPv6. IPv6 offers a lot more addresses by using larger numbers. It also is important to cyber security, as IPv6 is more protected than IPv4. It uses IPsec to protect connections and prevent malware. It can handle cyber attacks and protect online privacy. IPv6 can run end-to-end encryption. It supports more secure name resolution, protecting users against naming-based attacks. In short, it enhances cyber security and is the newest version of Internet Protocol.