Principal Engineer
Product Risk & Compliance, Meta
Senior Research Scientist
Google Brain
Doctor of Philosophy
Stanford University
Bio
I am a Principal Engineer in Meta's Privacy Org working on technical, research, and regulatory aspects of anonymization that serve Meta's compliance obligations around user data. My work protects several critical large revenue workstreams under the Ads and Whatsapp orgs ensuring their compliance under relevant legislation like GDPR, DMA, and CCPA. I have also incubated several privacy-enhancing technologies at Meta such as scaled de-identified authentication and privacy-preserving password protection. More broadly, my interests lie in the intersection of cryptography, privacy, and ML.
Before Meta, I spent half a decade at Google working on privacy and machine learning research as part of Google Brain. Some of the projects I worked on or helped with include local differential privacy, the the Shuffle Model of privacy and its privacy amplification guarantees, the Chrome Privacy Sandbox proposals, algorithms to privately train ML models, Chrome's Password Check tool, and post-quantum crypto. I was part of the FrodoKEM team that designed and submitted the Frodo Key Encapsulation Mechanism to the NIST competition on post-quantum crypto.
I received my Ph.D. from the Department of Computer Science at Stanford University advised by Prof. Dan Boneh. My thesis focused on modeling and building secure deterministic and searchable encryption schemes. I also worked on building lattice-based cryptographic primitives, among other topics in cryptography.
During my Ph.D., I spent summers with Dirk Balfanz and the security engineering team doing research on the Security Key at Google, and at Microsoft Research (Silicon Valley) working with Gil Segev and Ilya Mironov. Earlier, I graduated from the Computer Science and Engineering Department at IIT Madras with a Bachelors of Technology in Computer Science.
Patents & Publications
 Authenticating Anonymous Information, US Patent
#12,316,621B1, 2025 Methods for Protecting Privacy, US Patent
#2024/0204991A1, 2024 |
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Oblivious Revocable Functions and Encrypted Indexing
With Kevin Lewi, Jon Millican, Arnab Roy IACR ePrint Archive 2022 |
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Dit: De-identified authenticated telemetry at scale
With Sharon Huang, Subodh Iyengar, Sundar Jeyaraman, Shiv Kushwah, Chen-Kuei Lee, Zutian Luo, Payman Mohassel, Shaahid Shaikh, Yen-Chieh Sung, Albert Zhang Real World Crypto 2021 |
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Information Leakage in Embedding Models
With Congzheng Song ACM CCS 2020 |
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Encode, Shuffle, Analyze Privacy Revisited: Formalizations and Empirical Evaluation
With Úlfar Erlingsson, Vitaly Feldman, Ilya Mironov, Shuang Song, Kunal Talwar, and Abhradeep Guha Thakurta Privacy Preserving Machine Learning Workshop at ACM CCS 2020 |
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That Which We Call Private
With Úlfar Erlingsson, Ilya Mironov, and Shuang Song Poster at USENIX Security 2019 |
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Protecting accounts from credential stuffing with password breach alerting
With Kurt Thomas, Jennifer Pullman, Kevin Yeo, Patrick Gage Kelley, Luca Invernizzi, Borbala Benko, Sarvar Patel, Dan Boneh, and Elie Burzstein Distinguished Paper Award Winner USENIX Security 2019 |
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Amplification by Shuffling: From Local to Central Differential Privacy via Anonymity
With Úlfar Erlingsson, Vitaly Feldman, Ilya Mironov, Kunal Talwar, and Abhradeep Guha Thakurta SODA 2018 |
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Scalable Private Learning with PATE
With Nicolas Papernot, Shuang Song, Ilya Mironov, Kunal Talwar, and Úlfar Erlingsson ICLR 2018 |
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Prochlo: Strong Privacy for Analytics in the Crowd
With Andrea Bittau, Úlfar Erlingsson, Petros Maniatis, Ilya Mironov, David Lie, Mitch Rudominer, Ushasree Kode, Julien Tinnes, and Bernhard Seefeld ACM SOSP 2017 |
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Frodo: Take off the ring! Practical, Quantum-Secure Key Exchange from
LWE With Joppe Bos, Craig Costello, Léo Ducas, Ilya Mironov, Michael Naehrig, Valeria Nikolaenko, and Douglas Stebila ACM CCS 2016 |
PhD Work
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Improved Constructions of PRFs Secure Against Related-Key
Attacks With Kevin Lewi and Hart Montgomery ACNS 2014 |
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Function-Private Subspace-Membership Encryption and Its
Applications
With Dan Boneh and Gil Segev ASIACRYPT 2013 |
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Function-Private Identity-Based Encryption: Hiding the Function in
Functional Encryption
With Dan Boneh and Gil Segev CRYPTO 2013 |
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Message-Locked Encryption for Lock-Dependent Messages
With Martín Abadi, Dan Boneh, Ilya Mironov, and Gil Segev CRYPTO 2013 |
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Key-Homomorphic PRFs and Their Applications
With Dan Boneh, Kevin Lewi, and Hart Montgomery CRYPTO 2013 |
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Deterministic Public-Key Encryption for Adaptively Chosen Plaintext
Distributions With Gil Segev and Salil Vadhan EUROCRYPT 2013 Journal of Cryptology 2018 |
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Algebraic PRFs with Improved Efficiency from the Augmented
Cascade With Dan Boneh, Hart Montgomery ACM CCS 2010 |
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Obfuscating Straight Line Arithmetic Programs With Srivatsan Narayanan, Ramarathnam Venkatesan DRM Workshop at ACM CCS 2009 |
Service
I have recently served on the program committees for the following conferences: IEEE S&P (Oakland) 2023, CRYPTO 2020, PETS 2025, 2023.
In the past, I have served on PCs or reviewed papers for the following conferences: EUROCRYPT, Usenix Security, PKC, TCC, PODS, ICALP, Financial Crypto, and ICISC.
Teaching
I helped my advisor with this excellent online course! in the
Winter of 2012.
I was a Course Assistant (CA) for CS255: Introduction to
Cryptography in Winter 2012 and 2011.
Personal
My sister Aditi Raghunathan is
also a computer scientist.
My Erdös number is 3: Paul Erdös → Peter Montgomery →
Ramarathnam Venkatesan → me.
A short write-up on
the Gödel prize-winning Toda's theorem—one of my favorite
results in complexity theory—as a project report for Prof. Luca
Trevisan's CS254.