Security Implications of Measurement Based Crosstalk on Superconducting Quantum Computers

Crosstalk is one of the major issues for scalability of superconducting quantum processors. But it can also be used by threat actors to intentionally sabotage computations and steal information. This paper analyzes data leakage due to crosstalk during qubit measurement. Prior research yielded an...

Private Communication Via Zero-Private-Capacity Quantum Channels

Private communication over a noisy quantum channel requires reliable transmission to the receiver and secrecy from the environment. Whether two channels with zero private capacity can jointly enable private communication is a longstanding open problem in quantum information theory. Here we resolv...

Noise Resilience of Quantum Key Distribution Protocols Secured against Independent Attacks with One-Way Communication

We investigate the resilience to noise of single-qubit quantum key distribution QKD protocols in the scenario of security against independent eavesdropping attacks and key distillation based on one-way classical communication. To this end, we introduce a noise-based metric that quantifies the...

SUSE-SU-2026:2765-1 Security update 5.1.4 for Multi-Linux Manager Client Tools

This update fixes the following issues: golang-github-QubitProducts-exporterexporter: - Security issue fixed: - CVE-2022-21698: Fixed prometheus/clientgolang possible denial of service using InstrumentHandlerCounter bsc1248699 golang-github-lusitaniae-apacheexporter: - Non customer facing changes...

Security update 5.1.4 for Multi-Linux Manager Client Tools

This update fixes the following issues: golang-github-QubitProducts-exporterexporter: Security issue fixed: CVE-2022-21698: Fixed prometheus/clientgolang possible denial of service using InstrumentHandlerCounter bsc1248699 golang-github-lusitaniae-apacheexporter: Non customer facing changes...

Security of Quantum Conference Key Agreement with Two-Way Classical Communication

Quantum conference key agreement QCKA enables multiple users to establish a common secret key with information-theoretic security and is regarded as a key primitive for secure communication in future quantum networks. However, practical implementations of QCKA typically suffer from higher noise...

SUSE-SU-2026:2243-1 Security update 5.0.8 for Multi-Linux Manager Client Tools

This update fixes the following issues: golang-github-QubitProducts-exporterexporter: - Security Fixes: - CVE-2022-21698: Fixed denial of service using InstrumentHandlerCounter bsc1248707 golang-github-prometheus-nodeexporter: - Backward Compatibility and packaging changes: - Added compatibility...

Full Network Nonlocality Based Security in Quantum Key Distribution

In the last decade research of quantum nonlocality has moved beyond the regime of standard Bell nonlocality to consider network-based experimental set-ups involving multiple independent sources. Notion of full network nonlocality has emerged as some truly network phenomena that cannot be realized...

SUSE-SU-2026:0626-1 Security update 5.1.2 for Multi-Linux Manager Client Tools

This update fixes the following issues: golang-github-QubitProducts-exporterexporter: - Non-customer-facing optimization around source building golang-github-lusitaniae-apacheexporter: - Build without apparmor for openSUSE Leap 16, SLES 16 or newer - Require Go 1.23 for building - Update to versi...

Pattern Based Quantum Key Distribution Using the Five Qubit Perfect Code for Eavesdropper Detection

I propose a new quantum key distribution protocol that uses the five qubit error correction code to detect the presence of eavesdropper reliably. The protocol turns any information theoretical attacks into a classical guess about the pattern. The logical qubit is encoded with a specific pattern...

Certified Randomness Amplification by Dynamically Probing Remote Random Quantum States

Cryptography depends on truly unpredictable numbers, but physical sources emit biased or correlated bits. Quantum mechanics enables the amplification of imperfect randomness into nearly perfect randomness, but prior demonstrations have required physically co-located, loophole-free Bell tests,...

A Non-Monotonic Relationship: an Empirical Analysis of Hybrid Quantum Classifiers for Unseen Ransomware Detection

Detecting unseen ransomware is a critical cybersecurity challenge where classical machine learning often fails. While Quantum Machine Learning QML presents a potential alternative, its application is hindered by the dimensionality gap between classical data and quantum hardware. This paper...

Schrodinger'S Toolbox: Exploring the Quantum Rowhammer Attack

Residual cross-talk in superconducting qubit devices creates a security vulnerability for emerging quantum cloud services. We demonstrate a Clifford-only Quantum Rowhammer attack-using just X and CNOT gates-that injects faults on IBM's 127-qubit Eagle processors without requiring pulse-level...

Efficient Mediated Multiparty Semi-Quantum Secret Sharing Protocol Based on Single-Qubit Reordering

Typical multiparty semi-quantum secret sharing MSQSS protocols require the dealer to possess full quantum capabilities, while the classical users usually need to perform three operations. To address this practical limitation, this paper introduces a new mediated MSQSS protocol that enables Alice,...

Forensics of Error Rates of Quantum Hardware

There has been a rise in third-party cloud providers offering quantum hardware as a service to improve performance at lower cost. Although these providers provide flexibility to the users to choose from several qubit technologies, quantum hardware, and coupling maps; the actual execution of the...

Resource Reduction in Multiparty Quantum Secret Sharing of Both Classical and Quantum Information under Noisy Scenario

Quantum secret sharing QSS enables secure distribution of information among multiple parties but remains vulnerable to noise. We analyze the effects of bit-flip, phase-flip, and amplitude damping noise on the multiparty QSS for classical message QSSCM and secret sharing of quantum information SSQ...

Malicious code in QubitSDK (RubyGems)

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MAL-2024-2910 Malicious code in qubit-placement-callbacks (npm)

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Malicious code in qubit-placement-callbacks (npm)

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SUSE-EL-9-CLIENT-TOOLS-2023-3875 Security update for SUSE Manager Client Tools

This update fixes the following issues: golang-github-lusitaniae-apacheexporter: - Security issues fixed: CVE-2022-32149: Fix denial of service vulnerability bsc1204501 CVE-2022-41723: Fix uncontrolled resource consumption bsc1208270 CVE-2022-46146: Fix authentication bypass vulnarability...