Jeremy Bannister Author

Charles Edge was the CTO of bootstrappers.mn and the CTO/COO of secretchest.io - and a former director at Jamf, where he led the development of Jamf Now. He held 35 years of experience as a developer, administrator, architect, product manager, entrepreneur, and CTO. He authored 25 books and more than 6,000 blog posts on technology, and served as an editor and author for a number of publications. Charles served on the board of directors for a number of companies and non-profits, and frequently spoke at conferences including DefCon, BlackHat, LinuxWorld, the Apple Worldwide Developers Conference, and a number of Apple-focused conferences. Charles also authored krypted.com and was a cofounder/host of the MacAdmins Podcast and The History Of Computing podcast. He passed away in April of 2024, and his extensive network of people felt the loss very deeply.

Jeremy Bannister is a Swift developer from New York who now lives in Spain. He connected with Charles Edge in December of 2021 and began working for Charles to prototype a password management tool with a focus on resisting quantum-computing decryption attacks. They worked together until Charles' unexpected passing in April 2024. Jeremy is happy to have helped proofread Charles' manuscript and helped to allow his final book to be published.

Joel Rennich is the SVP of Product at JumpCloud residing in the greater Minneapolis, MN area. While Joel has spent most of his professional career focused on Apple products, at JumpCloud he works with a team focused on boldly going where no devs have gone before across all platforms. In 2018 Jamf acquired Joel's startup, Orchard & Grove, which is where Joel developed the widely-used open source software NoMAD. Over the years Joel has been a frequent speaker at a number of conferences including WWDC, MacSysAdmin, MacADUK, Penn State MacAdmins Conference, Objective by the Sea, FIDO Authenticate and others in addition to user groups everywhere. Joel spent over a decade working at Apple in Enterprise Sales and started the website afp548.com which was the mainstay of Apple system administrator education during the early years of macOS X.