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cosic.bsky.social
COSIC
@cosic.bsky.social
300 followers 39 following 740 posts
COSIC provides a broad expertise in digital security and strives for innovative security solutions.
COSIC is headed by Bart Preneel.
https://www.esat.kuleuven.be/cosic/
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cosic.bsky.social
🎥The COSIC Seminar on "Improvements of the Moreno-Moreno Theorem" by Wenxuan Shan is now online: www.youtube.com/watch?v=TSwb...
COSIC Seminar - "Improvements of the Moreno-Moreno Theorem" (Wenxuan Shan, COSIC)
YouTube video by COSIC - Computer Security and Industrial Cryptography
www.youtube.com
December 18, 2025 at 9:27 AM
cosic.bsky.social
🎥The COSIC Seminar on "Application-Specific Arithmetic Operators with the FloPoCo HDL core generator" by Florent de Dinechin (Institut National de Sciences Appliquées Lyon) is now online on our YouTube channel: www.youtube.com/watch?v=vEOq...
COSIC Seminar "Application-Specific Arithmetic Operators with the FloPoCo..." (Florent de Dinechin)
YouTube video by COSIC - Computer Security and Industrial Cryptography
www.youtube.com
December 16, 2025 at 3:11 PM
cosic.bsky.social
🎥The COSIC Seminar "RISQrypt: Fast, Secure, and Configurable HW/SW Co-Design for Post-Quantum Cryptography" by Erkay Savaş (Sabanci University) is now available on our Youtube channel: www.youtube.com/watch?v=eMxE...
COSIC Seminar "RISQrypt: Fast, Secure, and Configurable HW/SW..." (Erkay Savaş, Sabanci University)
YouTube video by COSIC - Computer Security and Industrial Cryptography
www.youtube.com
December 16, 2025 at 12:01 PM
cosic.bsky.social
This week in COSIC... We have 3 seminars for you (free to attend in person). The speakers are: Erkay Savaş (Sabanci University), Florent de Dinechin (Institut National de Sciences Appliquées Lyon) and Wenxuan Shan (COSIC).
www.esat.kuleuven.be/cosic/?post_...
Events Archive - COSIC
www.esat.kuleuven.be
December 15, 2025 at 10:00 AM
cosic.bsky.social
Jesse De Meulemeester and Jo Van Bulck presented "Fifty Dollars To Root The Cloud: Low-Cost Memory Interposer Attacks On Confidential Computing" at Black Hat Europe
blackhat.com/eu-25/briefi...
December 12, 2025 at 11:33 AM
cosic.bsky.social
Jesse De Meulemeester (COSIC) shows how a tiny board between #CPU and memory can redirect accesses to read protected data. By replaying captured ciphertext, the victim reads stale data, breaking integrity in #SGX/#TDX and #AMD SEV. 🔐⚡
youtube.com/watch?v=dnUo...
#BatteringRAM
Cybersecurity Industry Day 2025 - RAMming the Cloud: Practical... (Jesse De Meulemeester, COSIC)
YouTube video by COSIC - Computer Security and Industrial Cryptography
youtube.com
December 12, 2025 at 10:04 AM
cosic.bsky.social
Imagine walking into a hotel… with two forged cards that open every door. That’s #Unsaflok, explained by Lennert Wouters (COSIC) at the Cybersecurity Industry Day: www.youtube.com/watch?v=4hnr...
A cascade of flaws put 3M+ Saflok hotel locks in 131 countries at risk.
Cybersecurity Industry Day 2025 - Unsaflok: Hacking Millions of Hotel Locks (Lennert Wouters, COSIC)
YouTube video by COSIC - Computer Security and Industrial Cryptography
www.youtube.com
December 11, 2025 at 3:11 PM
cosic.bsky.social
Imagine walking into a hotel… with two forged cards that open every door. That’s #Unsaflok, explained by Lennert Wouters (COSIC) at the Cybersecurity Industry Day:
www.youtube.com/watch?v=4hnr...
A cascade of flaws put 3M+ Saflok hotel locks in 131 countries at risk.
Cybersecurity Industry Day 2025 - Unsaflok: Hacking Millions of Hotel Locks (Lennert Wouters, COSIC)
YouTube video by COSIC - Computer Security and Industrial Cryptography
www.youtube.com
December 10, 2025 at 10:36 AM
cosic.bsky.social
💡 Did you notice that your bank checks if the account number matches the recipient’s name during transfers? Robin Geelen from COSIC demoed a secure way to do this using fully homomorphic #encryption at the #CIF #Cybersecurity Industry Day in Mechelen!
www.youtube.com/watch?v=f6y-...
Cybersecurity Industry Day 2025 - String Comparison in the Encrypted Domain (Robin Geelen, COSIC)
YouTube video by COSIC - Computer Security and Industrial Cryptography
www.youtube.com
December 9, 2025 at 12:05 PM
cosic.bsky.social
Welcome to our new Postdoc Dominik Roy George! His research focuses on integrating Privacy-Enhancing Technologies into the IoT ecosystem.
#choosecosic
December 8, 2025 at 1:44 PM
cosic.bsky.social
Tomorrow Dr. Takahito Yoshizawa will give a presentation on "Security and privacy gaps in the V2X standards" at the "The ULTIMO Frontier: Let’s Talk Automated Mobility" webinar series.
ultimo-he.eu/the-ultimo-f...
The ULTIMO Frontier: Cybersecurity and Privacy in Autonomous Mobility
The next edition of The ULTIMO Frontier: Let’s Talk Automated Mobility webinar series is coming soon!
ultimo-he.eu
December 8, 2025 at 12:43 PM
cosic.bsky.social
Our research expert Aysajan Abidin will be speaking at this workshop on #datamarkets in Leuven on 8th December 2025.
www.linkedin.com/posts/jan-de...
Agenda Workshop | Jan De Bruyne
Please join us for a Workshop on #datamarkets in Leuven on 8-9 December 2025. The event will explore key legal questions related to #data sharing in Europe, including issues of #privacy, #smart contra...
www.linkedin.com
December 5, 2025 at 4:26 PM
Reposted by COSIC
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Extending and Accelerating Inner Product Masking with Fault Detection via Instruction Set Extension (Songqiao Cui, Geng Luo, Junhan Bao, Josep Balasch, Ingrid Verbauwhede) ia.cr/2025/2165
Abstract. Inner product masking is a well-studied masking countermeasure against side-channel attacks. IPM-FD further extends the IPM scheme with fault detection capabilities. However, implementing IPM-FD in software especially on embedded devices results in high computational overhead. Therefore, in this work we perform a detailed analysis of all building blocks for IPM-FD scheme and propose a Masked Processing Unit to accelerate all operations, for example multiplication and IPM-FD specific Homogenization. We can then offload these computational extensive operations with dedicated hardware support. With only 4.05% and 4.01% increase in Look-Up Tables and Flip-Flops (Random Number Generator excluded), respectively, compared with baseline CV32E40p RISC-V core, we can achieve up to 16.55× speed-up factor with optimal configuration. We then practically evaluate the side-channel security via uni- and bivariate Test Vector Leakage Assessment which exhibits no leakage. Finally, we use two different methods to simulate the injected fault and confirm the fault detection capability of up to k − 1 faults, with k being the replication factor. Image showing part 2 of abstract.
December 1, 2025 at 12:23 AM
cosic.bsky.social
Bart Preneel in #vrtnws podcast Het Kwartier: "Maximum #rivacy protection is essential for the #MyGov app, combining private and governmental data. There isn’t enough time to get it right before the November 2026 launch."
www.vrt.be/vrtnws/nl/lu... (in Dutch)
December 4, 2025 at 11:48 AM
cosic.bsky.social
Welcome to Jiahui He, the newest postdoc in our research group. Jiahui works on classical cryptanalysis.
"I believe COSIC is one of the top research groups in the field of cryptanalysis."
#choosecosic
December 2, 2025 at 3:35 PM
cosic.bsky.social
🎥The COSIC Seminar on "FHE for Multiple Parties using NTRU and LWE" by Oliver Zajonc (COSIC) is now available on our YouTube channel: www.youtube.com/watch?v=CBZN...
COSIC Seminar "FHE for Multiple Parties using NTRU and LWE" (Oliver Zajonc, COSIC)
YouTube video by COSIC - Computer Security and Industrial Cryptography
www.youtube.com
December 2, 2025 at 12:10 PM
cosic.bsky.social
On Thursday COSIC researcher Oliver Zajonc will be presenting "FHE for Multiple Parties using NTRU and LWE" online at FHE.org:
luma.com/FHE.org-082
#FHE #HomomorphicEncryption #NTRU #LWE
Fully Homomorphic Encryption
We are a community of researchers and developers interested in advancing homomorphic encryption and other secure computation techniques.
FHE.org
December 1, 2025 at 1:24 PM
cosic.bsky.social
After 2.5 years of discussion in the Council a somewhat weakened version of #Chatcontrol has been approved and is heading for the trilogue. A very sad moment for #privacy and a missed opportunity to invest in efforts to effectively protect children.
www.linkedin.com/posts/bart-p...
Child sexual abuse: Council reaches position on law protecting children from online abuse | Bart Preneel | 33 comments
After 2.5 years of discussion in the Council a somewhat weakened version of #Chatcontrol has been approved and is heading for the trilogue. A very sad day for privacy and a missed opportunity to inve...
www.linkedin.com
December 1, 2025 at 1:22 PM
cosic.bsky.social
This week in COSIC... On Tuesday COSIC researcher Oliver Zajonc will give a seminar on "FHE for Multiple Parties using NTRU and LWE": www.esat.kuleuven.be/cosic/?post_...
Events Archive - COSIC
www.esat.kuleuven.be
December 1, 2025 at 9:38 AM
cosic.bsky.social
A few pictures of COSIC researcher John Gaspoz after defending his PhD thesis on "Secure Software Masking Schemes Against Power Analysis Attacks" last week.
December 1, 2025 at 8:44 AM
cosic.bsky.social
COSIC researcher Jiayi Kang successfully defended her PhD thesis on "Optimisations and Applications of Fully Homomorphic Encryption" today! 🎓🥳
November 28, 2025 at 11:31 AM
cosic.bsky.social
🎥 Relive the Highlights of the Cybersecurity Industry Day!
www.linkedin.com/posts/cybers...
2025 Cybersecurity Industry Day Aftermovie | Cybersecurity Vlaanderen
🎥 Relive the Highlights of our Cybersecurity Industry Day! See you next year! COSIC (KU Leuven), DistriNet Research Unit @KU Leuven, Centre for IT & IP Law (CiTiP) @KU Leuven, Software Languages Lab, ...
www.linkedin.com
November 28, 2025 at 9:31 AM
cosic.bsky.social
John Gaspoz successfully defended his PhD thesis on "Secure Software Masking Schemes Against Power Analysis Attacks" today, congratulations! 🎓🥳
November 27, 2025 at 3:20 PM
cosic.bsky.social
The COSIC newsletter for October and November is now online, go to www.esat.kuleuven.be/cosic/sites/... to see what we've been up to.
November 27, 2025 at 3:17 PM
cosic.bsky.social
🏆 Finalist for the Cyber Security Researcher Award 2025: Vincent Rijmen! Vincent is best known as the co-designer of the Rijndael algorithm, which became the Advanced Encryption Standard (AES) – a cornerstone of secure digital communication globally.
#BelgiumCyberSecurityAwards
November 27, 2025 at 11:07 AM