Hello! I am Anirban Chakraborty

I am currently working as a postdoctoral researcher at the Max Planck Institute for Security and Privacy, jointly hosted by Peter Schwabe and Yuval Yarom. I am also a visiting researcher at Ruhr Universität Bochum. Previously, I was a PhD student under the supervision of Debdeep Mukhopadhyay at the Indian Institute of Technology Kharagpur, India.

My research interests span all aspects of Hardware Security with a primary focus on Microarchitecture and Systems Security. I am particularly interested in the design and testing of secure systems, Trusted Execution Environments (TEEs), and the security evaluation of cryptographic applications such as Fully Homomorphic Encryption schemes, symmetric-key cryptosystems, and Physically Unclonable Functions.

News

• July 2026 — Assigned CVE-2026-5598 for discovering timing leakage in BouncyCastle.
• July 2026 — Our paper “They don’t care about this”: A Systematic Study of TEE Build Reproducibility in the Wild accepted at CCS 2026.
• July 2026 — Our paper 0xELF: Reverse Engineering Framework for Flexo-Generated Weird Machines accepted at RAID 2026.
• April 2026 — Our paper Fast and Secure LLC Caches via Spatial Windows accepted at DIMVA 2026.

Recent Publications

Conferences

• Annika Wilde, Marco Gutfleisch, Felix Reichmann, Anirban Chakraborty, Yuval Yarom, Angela Sasse, Ghassan Karame. “They don’t care about this”: A Systematic Study of TEE Build Reproducibility in the Wild. 33rd ACM Conference on Computer and Communications Security (CCS 2026), The Hague, Netherlands, November, 2026.

• Gianmarco Lusvardi, Mauro Andreolini, Luca Ferretti, Yuval Yarom, Anirban Chakraborty. 0xELF: Reverse Engineering Framework for Flexo-Generated Weird Machines. 29th International Symposium on Research in Attacks, Intrusions and Defenses (RAID 2026), Lancaster, UK, October, 2026.

• Roland Czerny, Simon Lammer, Lukas Giner, Anirban Chakraborty, Daniel Gruss. : Fast and Secure LLC Caches via Spatial Windows. 23rd Conference on Detection of Intrusions and Malware & Vulnerability Assessment (DIMVA 2026), Chania, Greece, July, 2026.

• Yanik Kleibrink, Anirban Chakraborty, Yuval Yarom. General Store: Speculative Address Translation in x86 Processors. Proceedings of the Microarchitecture Security Conference (uASC 2026), Leuven, Belgium, February, 2026.

• Anirban Chakraborty, Nimish Mishra, Sayandeep Saha, Sarani Bhattacharya, Debdeep Mukhopadhyay. Systematic Evaluation of Randomized Cache Designs against Cache Occupancy. 34th USENIX Security Symposium (USENIX Security 2025), Seattle, WA, USA, August 2025.

• Bhuvnesh Chaturvedi, Anirban Chakraborty, Ayantika Chatterjee, Debdeep Mukhopadhyay. IND-CPA^C :A New Security Notion for Conditional Decryption in Fully Homomorphic Encryption:. 16th International Conference on Post-Quantum Cryptography (PQCRYPTO 2025), Taipei, Taiwan, April,2025.

Journals

• Shubhi Shukla, Abhijeet Singh, Rajdeep Chakraborty, Anirban Chakraborty, Harshal Mumbaikar, Manoj Kumar Munigala, Madhusudhan K N, Pabitra Mitra, Debdeep Mukhopadhyay. Minimal Counters, Maximum Insight: Simplifying System Performance with HPC Clusters for Optimized Monitoring. IEEE Computer Architecture Letters (CAL): 177-180 (2025).

Talks & Presentations

• Speaker, Verifying Constant-Time Java at Scale: Toward Trustworthy Crypto on Managed Runtimes, Universität zu Lübeck — June 2026.
• Speaker, Faults In Our Bus: Novel Bus Fault Attacks to Break ARM TrustZone, ZTHA@CHES2024.
• Speaker, Black Hat Asia Briefings 2024, Singapore — May 2024.
• Invited Talk, ACM India ARCS 2023.

Teaching

Ruhr-Universität Bochum

• 2024–2025 — Microarchitectural Attacks and Defenses, with Prof. Yuval Yarom.
• Summer 2025 — Cache Attacks, with Prof. Yuval Yarom.
• Summer 2026 — Introduction to CPU Design, with Prof. Yuval Yarom.

Indian Institute of Technology Kharagpur

• 2020–2023 — High-Performance Computer Architecture, with Prof. Debdeep Mukhopadhyay.
• 2022–2023 — Parallel Algorithms, with Prof. Debdeep Mukhopadhyay.
• Autumn 2021 — Programming and Data Structures, with Prof. Debdeep Mukhopadhyay.
• Autumn 2019 — Discrete Mathematics, with Prof. Abhijit Das.
• Spring 2019 — Algorithms Laboratory, with Prof. Abhijit Das.
• 2019–2023 — Hardware Security (NPTEL Online MOOC), with Prof. Debdeep Mukhopadhyay.

Professional Service

Program Committee  ·  ACNS 2025  ·  CCS 2025, 2026  ·  Usenix SEC 2026  ·  CHES 2026  ·  WOOT 2026

Artifact Evaluation  ·  CCS 2023  ·  HPCA 2024

Journal/Transactions  ·  IEEE TIFS, IEEE TC, ACM TACO, JHASS, JETC, ACM CSUR

Awards & Highlights

• CVE-2022-47549 awarded (with co-authors) for demonstrating bypass of signature verification and installation of malicious trusted applications via electromagnetic fault injections in OP-TEE.
• Discovered (with co-authors) an integer-overflow vulnerability leading to a NULL-pointer dereference in Linaro TEE — patch merged into the Linux kernel stable tree.
• Intel Project Circuit Breaker Bug Bounty (invited), awarded US$ 4,500 for exploring vulnerabilities in Intel TDX.
• PhD Dissertation Award Finalist, IEEE HOST 2024.
• PhD Forum Best Presentation Award nomination, AsianHOST 2022.
• ACM-India / IARCS Travel Grant for HPCA 2023, Montreal.
• Best Poster (2nd runner-up), SPACE 2020.
• Winner and runner-up, CSAW Embedded Security Challenge India, 2022 and 2020.