On Tuesday September 24th we released version 2.0.7-3 of Zcashd to address two security issues. Both were discovered and reported to us by Florian Tramèr, Dan Boneh, and Kenneth G. Paterson. The “REJECT” vulnerability was reported to us on Friday September 13th 2019, and the “PING” vulnerability was reported to us on Friday September 20th 2019.