Security infrastructure and PKI at production scale
Leading foundational cryptography services and partnering across engineering teams on secure system design.
Security · Systems · Leadership
Hoss Shafagh
Security engineering leader and systems researcher.
I work at the intersection of security engineering, distributed systems, and technical leadership. I build and lead work on foundational security systems, including identity, cryptography, PKI, and secure infrastructure at scale.
Currently leading the Cryptography Services team at Netflix. Previously a researcher at ETH Zurich.
My research focused on data ownership, encrypted data processing, and cryptographic authorization across security, distributed systems, and networking.
Focus
Areas of work
Security engineering
Identity, PKI, cryptography, foundational security platforms, and secure systems design.
Technical leadership
Building teams, developing engineers, setting technical direction, and connecting security strategy to implementation.
Privacy and systems
Encrypted data processing, cryptographic authorization, distributed systems, and data ownership.
Selected work
Systems that establish trust
TimeCrypt
Scalable, real-time analytics over encrypted time-series data with cryptographic access control.
Droplet
Decentralized authorization and access control for encrypted data streams without intermediary trust entities.
Talos and Pilatus
Practical encrypted data processing and selective sharing for resource-constrained and mobile systems.
Selected publications
Research highlights
Zeph: Cryptographic Enforcement of End-to-End Data Privacy
OSDI 2021
Droplet: Decentralized Authorization and Access Control for Encrypted Data Streams
USENIX Security 2020
TimeCrypt: Encrypted Data Stream Processing at Scale with Cryptographic Access Control
NSDI 2020
Secure Sharing of Partially Homomorphic Encrypted IoT Data
SenSys 2017
Talos: Encrypted Query Processing for the Internet of Things
SenSys 2015
Delegation-based Authentication and Authorization for the IP-based Internet of Things
SECON 2014