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cosic.bsky.social
COSIC
@cosic.bsky.social
300 followers 39 following 720 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
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
cosic.bsky.social
Curious how tabletop exercises help you prepare for digital crises? This new blog post (in Dutch) explains their value and practical use.
Read it here: cybersecurity-bites.be/ict-beheer/h...
#cybersecurity
Het nut en gebruik van tabletop exercises: voorbereiden op digitale crisissituaties | cybersecurity-bites.be
cybersecurity-bites.be
November 27, 2025 at 9:55 AM
cosic.bsky.social
A new member in the team of Prof Frederik Vercauteren: welcome to Arthur Herlédan Le Merdy!
"I chose COSIC because it holds a central place in cryptography, especially in isogeny-based post-quantum cryptography, where the group has made many major contributions."
#choosecosic
November 26, 2025 at 10:01 AM
cosic.bsky.social
Today, COSIC professor Ingrid Verbauwhede received the FWO Excellence Prize for her pioneering work in hardware and semiconductor security, presented by King Philippe of Belgium. A well-deserved recognition of her outstanding career.
#kuleuven #fwo #cosic
November 24, 2025 at 5:05 PM
cosic.bsky.social
A study shows 3.5 billion WhatsApp accounts could be scraped via the app’s lookup feature. Bart Preneel notes in newspaper De Morgen that default settings expose far more user data than most expect: profile photos, bios, even sensitive info.
www.demorgen.be/nieuws/3-5-m... (paywall)
3,5 miljard telefoonnummers te grabbel door beveiligingsfout bij WhatsApp: hoe kan je jezelf beschermen?
Door een beveiligingsfout bij WhatsApp lagen de telefoonnummers en andere gegevens van 3,5 miljard mensen jarenlang te grabbel. Dat blijkt uit een onderzoek van de universiteit van Wenen. ‘Pas nadat w...
www.demorgen.be
November 21, 2025 at 10:08 AM
cosic.bsky.social
📹Sharing knowledge matters. We recorded the #PQCSA workshop on #PQC Migration & Supply Chain Readiness for the Automotive Industry in Frankfurt. Q&A and hands-on parts stay exclusive, but the main talks are now online:
youtube.com/playlist?lis...
#postquantum #quantum #eudigital
PQCSA Workshop on PQC Migration & Supply Chain Readiness for the Automotive Industry (Frankfurt, 2025) - YouTube
PQCSA Workshop on PQC Migration & Supply Chain Readiness for the Automotive Industry (Frankfurt, 2025)Vehicles have quickly evolved to sophisticated computer...
youtube.com
November 20, 2025 at 2:17 PM
cosic.bsky.social
We’re incredibly proud of Prof. Vincent Rijmen, whose pioneering work with Joan Daemen led to #Rijndael, now honoured with an #IEEE Milestone as the foundation of the global #AES standard. A landmark moment for KU Leuven and for secure communication worldwide.
November 19, 2025 at 11:14 AM
cosic.bsky.social
Honouring a milestone in cryptography: #IEEE has awarded a Milestone to the #AES standard, originally designed as #Rijndael by KU Leuven’s Vincent Rijmen and Joan Daemen. Their work continues to secure everything from smartphones to critical infrastructure worldwide.
November 19, 2025 at 11:07 AM
cosic.bsky.social
Our postdoc Rafa Gálvez will speak at MyData-Trust's Data Privacy for Health & Life Sciences Summit in Brussels on January 29th on "Privacy-Enhancing Technologies: Enabling Data Innovation Without Compromise": www.mydata-trust.com/events/data-...
#mydata #mydatatrust #privacy
November 18, 2025 at 12:19 PM
cosic.bsky.social
Sharing knowledge matters. We recorded the #PQCSA workshop on #PQC Migration & Supply Chain Readiness for the Automotive Industry in Frankfurt. Q&A and hands-on parts stay exclusive, but the main talks are now online:
youtube.com/playlist?lis...
#postquantum #quantum #eudigital
PQCSA Workshop on PQC Migration & Supply Chain Readiness for the Automotive Industry (Frankfurt, 2025) - YouTube
PQCSA Workshop on PQC Migration & Supply Chain Readiness for the Automotive Industry (Frankfurt, 2025)Vehicles have quickly evolved to sophisticated computer...
youtube.com
November 18, 2025 at 8:53 AM
cosic.bsky.social
Bart Preneel warns in De Morgen that the new EU chat control still risks the end of private communication. Softened measures don’t hide that scanning messages for child abuse remains intrusive and prone to false positives. #Privacy #ChatControl
www.demorgen.be/nieuws/afzwa... [paywall]
‘Afzwakkingen worden luid aangekondigd, maar over de uitbreidingen wordt gezwegen’: waarom ‘chat control light’ problematisch blijft
EU-voorzitter Denemarken komt met een nieuw voorstel om de communicatie van Europeanen te scannen op verboden inhoud. Daarmee zijn de bezwaren van privacy-experts niet van de baan.
www.demorgen.be
November 17, 2025 at 1:33 PM
cosic.bsky.social
This week in COSIC... Tomorrow we are organizing the IEEE Milestone Award Ceremony to honor the selection of Rijndael as AES: rijndael-ieeemilestone.cs.ru.nl/index
November 17, 2025 at 1:29 PM
cosic.bsky.social
Our research expert Aysajan Abidin leading a breakout session on "Post-Quantum Cryptography: Roadmap, Status and Next Steps" at the Cybersecurity Industry Day in Mechelen yesterday.
#cif #pqc #postquantum
November 14, 2025 at 9:34 AM
cosic.bsky.social
Today at the Cybersecurity Industry Day in Mechelen, COSIC researchers are demonstrating real-world security challenges, from (un)safe hotel room locks to images that share the same hash value.
#cif #kuleuven
November 13, 2025 at 12:41 PM
cosic.bsky.social
Bart Preneel wil speak about privacy at "and& connect": "On November 13, start-ups, scale-ups and investors gather in Leuven, Europe’s Capital of Innovation. Not just to shake hands, but to ask the question that matters: What about us, humans?" www.andconnect.be
November 12, 2025 at 12:01 PM
Reposted by COSIC
eprint.ing.bot
TreeCast: Multi-Party Key Establishment Protocol for IoT Devices (Supriyo Banerjee, Sayon Duttagupta) ia.cr/2025/2021
Abstract. Secure communication in the Internet of Things (IoT) requires lightweight protocols that scale across unicast, multicast, and broadcast settings. Existing solutions typically depend on centralized gateways, which introduce single points of failure and scalability limitations. We present TreeCast, a decentralized group key establishment protocol that organizes devices in a binary tree and derives communication keys through hybrid key exchange. The protocol achieves efficient and scalable key management, supporting dynamic membership with localized rekeying. We provide a formal security analysis and proof, showing that TreeCast achieves authentication, session key confidentiality, post-compromise security, and partial forward secrecy. In addition, we evaluate computational and storage costs of the protocol, demonstrating logarithmic scalability in both communication overhead and device state. By enabling a single framework for unicast, multicast, and broadcast communication, our approach bridges the gap between cryptographic rigor and practical IoT deployment. TreeCast provides a deployable, communication-oriented solution to secure large-scale IoT networks. Image showing part 2 of abstract.
November 1, 2025 at 2:20 AM
cosic.bsky.social
Closing the PQCSA Workshop on "PQC Migration & Supply Chain Readiness for Automotive". The day ends with group roadmap building, live feedback, and consensus on next steps.
www.esat.kuleuven.be/cosic/events...
#pqcsa #pqc #postquantum #quantum #escar
November 7, 2025 at 3:16 PM
cosic.bsky.social
Group sessions to draft PQC transition steps and milestones, guided by the experts - at the PQCSA Workshop on "PQC Migration & Supply Chain Readiness for the Automotive Industry".
www.esat.kuleuven.be/cosic/events...
#pqcsa #pqc #postquantum #quantum #escar
November 7, 2025 at 1:43 PM
cosic.bsky.social
At the PQCSA Workshop on PQC Migration, Jan Klaußner (BDR, Germany) gives a brief introduction before participants move on to group sessions to draft PQC transition steps and milestones, guided by the experts.
www.esat.kuleuven.be/cosic/events...
#pqcsa #pqc #postquantum #quantum #escar
November 7, 2025 at 1:41 PM
cosic.bsky.social
Aysajan Abidin (COSIC, KU Leuven) is organizing the PQCSA Workshop on "PQC Migration & Supply Chain Readiness for the Automotive Industry" in Frankfurt today. A day full of interesting talks and group discussions.
www.esat.kuleuven.be/cosic/events...
#pqcsa #pqc #postquantum #quantum #escar
November 7, 2025 at 12:57 PM
cosic.bsky.social
Melissa Azouaoui (NXP, Germany) giving a talk on "Beyond Quantum Resilience: Embedded Security with and for PQC" at the PQCSA Workshop on "PQC Migration & Supply Chain Readiness for the Automotive Industry" today.
www.esat.kuleuven.be/cosic/events...
#pqcsa #pqc #postquantum #quantum #escar
November 7, 2025 at 12:54 PM