Google’s Threat Intelligence Group and security company iVerify have revealed details about Coruna, an exploit kit that exploits unpatched iPhones running iOS 13 through iOS 17.2.1. The kit uses multiple vulnerabilities to breach the iPhone's security layers and can take multiple routes to bypass core iOS protections, gain high-level privileges, and install malware. Despite its origins, Coruna appears to have been influenced by US-government-linked hacking tools and has been used in campaigns by Russian spies and China-based cybercriminals. The more widespread use, the more likely a leak will occur.