GTISC iOS 7.1.2 Jailbreak for Mac [iPhone, iPad, iPod touch]
About Mac 7.1.2 Jailbreak with GTISC
It is now unclear if students Yeongjin Jang and Tielei Wang are planning to make their exploits public or not. So far Jang known as @blue9057 demonstrates his iPhone 5S being jailbroken on iOS 7.1.1. Jang also noted that this program supports iOS 7.1.2 jailbreak tether meaning you have to run special recovery application to maintain jailbreak status after each reboot.
There is another public jailbreak for iOS 7.1.2 for Mac and Windows called Pangu. It was created by a group of hackers from China. It is free to use and available to public.
Unlike GTISC creating, Pangu offers jailbreak for iOS 7.1.2 untethered for iPhone and other iDevices. In other words, your jailbroken status remains after reboots. It only disappears after you update to a newer firmware version.