That is the #infosec news of the day, all the reports on DarkSword there:
Google TAG: https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain
iVerify: https://iverify.io/blog/darksword-ios-exploit-kit-explained
Lookout : https://www.lookout.com/threat-intelligence/article/darksword
Wired : https://www.wired.com/story/hundreds-of-millions-of-iphones-can-be-hacked-with-a-new-tool-found-in-the-wild/