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Jon Callas

Technologist, Inventor, Executive

Jon Callas is a renowned cryptographer, software engineer, and security expert with a distinguished career spanning several decades. He currently serves as a Senior Computer Scientist at SRI International, a position he has held since November 2023.12 Callas is also the founder of Zatik Security, which he established in August 2023.2

Throughout his career, Callas has made significant contributions to the field of cybersecurity:

  1. Co-founder of PGP Corporation and a primary author of the OpenPGP standard.2
  2. Co-founder of Silent Circle and Blackphone, focusing on encrypted communications.23
  3. Former CTO at companies like Entrust and PGP Corporation.2
  4. Worked at Apple multiple times, including as Security Design and Architecture Manager from 2016 to 2018.12
  5. Held positions at the Electronic Frontier Foundation and ACLU, advocating for privacy and security.14

Callas is credited with creating several Internet Engineering Task Force (IETF) standards, including OpenPGP, DKIM, and ZRTP.2 He has also been involved in developing encryption technologies for Apple, including FileVault 2 and iOS security features.2

His expertise extends beyond technical roles, as he has been an adjunct professor at Indiana University and a frequent speaker at security conferences.23 Callas is known for his advocacy of strong encryption and privacy rights in the digital age.4

Highlights

Jan 18 · linkedin

Professor Peter Schickele, from whom I received an education in Musical Pathology, has died. Gift link:

Feb 27 · linkedin

This is an amazing new thing that Vinnie is putting together. Not only is it a way for apps and systems to get easy end-to-end encryption and storage and synching, the business model of having a coop of developers will make this be available for any app that needs security.

Related Questions

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What are some of the projects Jon Callas has worked on at SRI International?
Jon Callas
Jon Callas, photo 1
Jon Callas, photo 2
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Location

San Jose, California, United States