Peter Eckersley, one of the original founders of Let’s Encrypt, passed away at CPMC Davies Hospital in San Francisco on 2nd September 2022. He had been diagnosed with cancer on 31 August, but died of complications during pre-operative preparations to treat the disease.
https://community.letsencrypt.org/t/peter-eckersley-may-his-memory-be-a-blessing/183854
https://nakedsecurity.sophos.com/2022/09/04/peter-eckersley-co-creator-of-lets-encrypt-dies-at-just-43/
https://en.wikipedia.org/wiki/Peter_Eckersley_(computer_scientist)