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A hand holds an open padlock with a green monochrome computer screen in the background.

The New York Times and WIRED recently featured the work and expertise of cryptographer Matthew Green, associate professor of computer science and member of the Johns Hopkins University Information Security Institute.

In The Times’ “Apple’s Newest Headache: An App That Upended Its Control Over Messaging,” Green shares security concerns related to the Beeper Mini app, which allows Android users to access Apple’s iMessage system: “A world where Apple works with third-party clients in a supported way is a good one. A world where Beeper and Apple try to fight each other in a tit-for-tat arms race is a bad one.”

In “This Clever New Idea Could Fix AirTag Stalking While Maximizing Privacy,” WIRED covers Green’s utilization of secret sharing and error correction coding to improve upon Apple’s new safety updates and preserve anonymity.

Green’s research includes techniques for privacy-enhanced information storage, anonymous payment systems, and bilinear map-based cryptography. He is one of the creators of the Zerocash protocol, which is used by the Zcash cryptocurrency, and a founder of an encryption startup Zeutro. He is the author of a popular blog, “A Few Thoughts on Cryptographic Engineering,” and he has more than 99K followers on Twitter.