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

• April 2026 — Our paper Fast and Secure LLC Caches via Spatial Windows accepted at DIMVA 2026.

Recent Publications

Conferences

• 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:. 6th International Conference on Post-Quantum Cryptography (PQCRYPTO 2025), Taipei, Taiwan, April,2025.

• Bhuvnesh Chaturvedi, Anirban Chakraborty, Ayantika Chatterjee, Debdeep Mukhopadhyay. Model Stealing Attacks On FHE-based Privacy-Preserving Machine Learning through Adversarial Examples. 23rd International Conference on Cryptology And Network Security (CANS 2024), Cambridge, UK, September, 2024.

• Bhuvnesh Chaturvedi, Anirban Chakraborty, Ayantika Chatterjee, Debdeep Mukhopadhyay. “Ask and Thou Shall Receive”: Reaction-based Full Key Recovery Attacks on FHE. 29th European Symposium on Research in Computer Security (ESORICS 2024), Bydgoszcz, Poland, September 2024.

• Anirban Chakraborty, Nimish Mishra, Debdeep Mukhopadhyay. Shesha: Multi-head Microarchitectural Leakage Discovery in new-generation Intel Processors. 33rd USENIX Security Symposium (USENIX Security 2024), Philadelphia, PA, USA, August 2024.

• Animesh Singh, Smita Das, Anirban Chakraborty, Rajat Sadhukhan, Ayantika Chatterjee, Debdeep Mukhopadhyay. FHEDA: Efficient Circuit Synthesis with Reduced Bootstrapping for Torus FHE. 9th IEEE European Symposium on Security and Privacy (EuroS&P 2024), Vienna, Austria, July 2024.

• Nimish Mishra, Rahul Arvind Mool, Anirban Chakraborty, Debdeep Mukhopadhyay. Plug Your Volt: Protecting Intel Processors against Dynamic Voltage Frequency Scaling based Fault Attacks. 61st ACM/IEEE Design Automation Conference (DAC 2024), San Francisco, CA, USA, July 2024.

• Nimish Mishra, Tridib Lochan Dutta, Shubhi Shukla, Anirban Chakraborty, Debdeep Mukhopadhyay. Too Hot to Handle: Novel Thermal Side-Channels in Power Attack-protected Intel processors. IEEE International Symposium on Hardware Oriented Security and Trust (HOST 2024), Washington DC, USA, May, 2024.

• Nimish Mishra, Anirban Chakraborty, Debdeep Mukhopadhyay. Faults in Our Bus: Novel Bus Fault Attack to Break ARM TrustZone. Network and Distributed System Security Symposium (NDSS 2024), San Diego, CA, USA, February–March 2024.

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).
• Nimish Mishra, Kuheli Pratihar, Satota Mandal, Anirban Chakraborty, Ulrich Rührmair, Debdeep Mukhopadhyay. CalyPSO: An Enhanced Search Optimization based Framework to Model Delay-based PUFs. IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES), 2024, issue 1: 501–526.

Talks & Presentations

• 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.