Pegasus (noun)
The flagship product of the controversial Israeli spyware vendor, NSO Group, used for remotely hacking mobile devices, most notably iPhones, via zero-click exploits.
CyberWire Glossary link.
Audio reference link: “Cybersecurity beyond the Headlines: A Conversation with Journalist Nicole Perlroth,” Kristen Eichensehr, and Nicole Perlroth, University of Virginia School of Law, YouTube, 14 February 2022