Protecting Firefox Data with Content Signatures

Thursday, January 18, 2018 - 1:30 pm2:00 pm

Julien Vehent, Firefox Operations Security Lead at Mozilla


Guaranteeing the integrity of data sent from web services to Firefox is difficult due to transport intermediaries that have the ability to modify data on-the-fly, and the risk of a web server compromise sending fraudulent data to end-users. Content signature is a new signing protocol built into Firefox to protect the integrity of the data exchanged between Mozilla and millions of Firefox installations in the wild.

Julien Vehent, Firefox Operations Security Lead at Mozilla

Julien leads the Firefox Operations Security team at Mozilla, tasked with defining, implementing and operating the security of Firefox's backend services and release engineering infrastructure. Julien's background is in web applications security, services architecture, cryptography and risk management. Julien is the author of "Securing DevOps", published at Manning Editions.

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@inproceedings {208143,
author = {Julien Vehent},
title = {Protecting Firefox Data with Content Signatures},
booktitle = {Enigma 2018 (Enigma 2018)},
year = {2018},
address = {Santa Clara, CA},
url = {},
publisher = {USENIX Association},
month = jan

Presentation Video