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<!doctype html>
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<head>
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<meta name="description" content="Hoss Shafagh is a security engineering leader and systems researcher working across cryptography, PKI, distributed systems, and privacy.">
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<meta property="og:title" content="Hoss Shafagh · Security engineering leader and systems researcher">
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<title>Hoss Shafagh · Security engineering leader and systems researcher</title>
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<body>
<header class="site-header">
<a class="site-name" href="index.html">Hoss Shafagh</a>
<nav class="site-nav" aria-label="Primary navigation">
<a href="#work">Work</a>
<a href="research.html">Research</a>
<a href="publications.html">Publications</a>
<a href="#about">About</a>
</nav>
</header>
<main>
<span id="intro" class="legacy-anchor" aria-hidden="true"></span>
<section id="about" class="hero" aria-labelledby="page-title">
<div>
<p class="eyebrow">Security · Systems · Leadership</p>
<h1 id="page-title">Hoss Shafagh</h1>
<p class="hero-statement">Security engineering leader and systems researcher.</p>
<div class="reading-column">
<p>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.</p>
<p class="currently">Currently leading the Cryptography Services team at Netflix. Previously a researcher at ETH Zurich.</p>
<p>My research focused on data ownership, encrypted data processing, and cryptographic authorization across security, distributed systems, and networking.</p>
<p class="meta">Ph.D., ETH Zurich · M.Sc. and B.Sc., RWTH Aachen University</p>
</div>
<div class="text-links" aria-label="Professional profiles">
<a href="https://www.linkedin.com/in/hshafagh" rel="me noreferrer">LinkedIn</a>
<a href="https://github.com/hosssha" rel="me noreferrer">GitHub</a>
<a href="https://scholar.google.com/citations?user=UrlPweEAAAAJ&hl=en" rel="me noreferrer">Google Scholar</a>
<a href="archive.html">Archive</a>
</div>
</div>
<img class="portrait" src="images/portrait-web.png" alt="Portrait of Hoss Shafagh" width="800" height="800">
</section>
<section class="section" aria-labelledby="focus-heading">
<p class="eyebrow">Focus</p>
<h2 id="focus-heading">Areas of work</h2>
<div class="focus-grid">
<div><h3>Security engineering</h3><p>Identity, PKI, cryptography, foundational security platforms, and secure systems design.</p></div>
<div><h3>Technical leadership</h3><p>Building teams, developing engineers, setting technical direction, and connecting security strategy to implementation.</p></div>
<div><h3>Privacy and systems</h3><p>Encrypted data processing, cryptographic authorization, distributed systems, and data ownership.</p></div>
</div>
</section>
<section id="work" class="section" aria-labelledby="work-heading">
<p class="eyebrow">Selected work</p>
<h2 id="work-heading">Systems that establish trust</h2>
<div class="work-list">
<article class="work-item"><h3>Security infrastructure and PKI at production scale</h3><p>Leading foundational cryptography services and partnering across engineering teams on secure system design.</p></article>
<article class="work-item"><h3>TimeCrypt</h3><p>Scalable, real-time analytics over encrypted time-series data with cryptographic access control.</p><div class="links"><a href="https://timecrypt.io">Project</a><a href="https://www.usenix.org/conference/nsdi20/presentation/burkhalter">Paper</a></div></article>
<article class="work-item"><h3>Droplet</h3><p>Decentralized authorization and access control for encrypted data streams without intermediary trust entities.</p><div class="links"><a href="https://dropletchain.github.io">Project</a><a href="https://www.usenix.org/conference/usenixsecurity20/presentation/shafagh">Paper</a></div></article>
<article class="work-item"><h3>Talos and Pilatus</h3><p>Practical encrypted data processing and selective sharing for resource-constrained and mobile systems.</p><div class="links"><a href="https://talos-crypto.github.io">Talos</a><a href="research.html#pilatus">Pilatus</a></div></article>
</div>
<a class="more-link" href="research.html">Explore research →</a>
</section>
<span id="publication" class="legacy-anchor" aria-hidden="true"></span>
<section class="section" aria-labelledby="publications-heading">
<p class="eyebrow">Selected publications</p>
<h2 id="publications-heading">Research highlights</h2>
<div class="publication-list">
<article class="publication"><h3>Zeph: Cryptographic Enforcement of End-to-End Data Privacy</h3><p>OSDI 2021</p><div class="links"><a href="https://www.usenix.org/conference/osdi21/presentation/burkhalter">Paper</a></div></article>
<article class="publication"><h3>Droplet: Decentralized Authorization and Access Control for Encrypted Data Streams</h3><p>USENIX Security 2020</p><div class="links"><a href="https://www.usenix.org/conference/usenixsecurity20/presentation/shafagh">Paper</a></div></article>
<article class="publication"><h3>TimeCrypt: Encrypted Data Stream Processing at Scale with Cryptographic Access Control</h3><p>NSDI 2020</p><div class="links"><a href="https://www.usenix.org/conference/nsdi20/presentation/burkhalter">Paper</a><a href="https://arxiv.org/pdf/1811.03457.pdf">Extended version</a></div></article>
<article class="publication"><h3>Secure Sharing of Partially Homomorphic Encrypted IoT Data</h3><p>SenSys 2017</p><div class="links"><a href="http://www.vs.inf.ethz.ch/publ/papers/mshafagh_SenSys17_Pilatus.pdf">Paper</a></div></article>
<article class="publication"><h3>Talos: Encrypted Query Processing for the Internet of Things</h3><p>SenSys 2015</p><div class="links"><a href="http://www.vs.inf.ethz.ch/publ/papers/mshafagh_SenSys15_Talos.pdf">Paper</a></div></article>
<article class="publication"><h3>Delegation-based Authentication and Authorization for the IP-based Internet of Things</h3><p>SECON 2014</p><div class="links"><a href="http://www.vs.inf.ethz.ch/publ/papers/mshafagh_secon14.pdf">Paper</a></div></article>
</div>
<a class="more-link" href="publications.html">View publication details →</a>
</section>
<span id="teaching" class="legacy-anchor" aria-hidden="true"></span>
<span id="projects" class="legacy-anchor" aria-hidden="true"></span>
<span id="misc" class="legacy-anchor" aria-hidden="true"></span>
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<footer class="site-footer"><p>Hoss Shafagh · San Francisco Bay Area</p></footer>
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