5 papers
CO-DEFEND: Continuous Decentralized Federated Learning for Secure DoH-Based Threat Detection
Diego Cajaraville-Aboy, Marta Moure-Garrido, Carlos Beis-Penedo +5
The use of DNS over HTTPS (DoH) tunneling by an attacker to hide malicious activity within encrypted DNS traffic poses a serious threat to network security, as it allows malicious…
Post-Quantum Entropy as a Service for Embedded Systems
Javier Blanco-Romero, Yuri Melissa Garcia-Niño, Florina Almenares Mendoza +3
Embedded cryptography stands or falls on entropy quality, yet small devices have few trustworthy sources and little tolerance for heavyweight protocols. We build a Quantum Entropy…
On the Practical Feasibility of Harvest-Now, Decrypt-Later Attacks
Javier Blanco-Romero, Florina Almenares Mendoza, Carlos GarcÃa Rubio +2
Harvest-now, decrypt-later (HN-DL) attacks threaten today's encrypted communications by archiving ciphertext until a quantum computer can break the underlying key exchange. This pa…
PARROT: Portable Android Reproducible traffic Observation Tool
Andrea Jimenez-Berenguel, Celeste Campo, Marta Moure-Garrido +3
The rapid evolution of mobile security protocols and limited availability of current datasets constrains research in app traffic analysis. This paper presents PARROT, a reproducibl…
DNS Query Forgery: A Client-Side Defense Against Mobile App Traffic Profiling
Andrea Jimenez-Berenguel, César Gil, Carlos Garcia-Rubio +2
Mobile applications continuously generate DNS queries that can reveal sensitive user behavioral patterns even when communications are encrypted. This paper presents a privacy enhan…