Quantum Secure Blind Decryption with Two Users

We propose two types of protocols for quantum secure blind decryption, involving two users and servers. User 1 holds the encrypted ciphertext. The servers store several indexed keys including the key encrypting the ciphertext. User 2 aims to obtain the decrypted text. The protocols are designed t...

Security-Aware Planning and Control of Multi-Agent Systems with LTL Tasks

This paper presents a secure-by-construction planning and control framework for multi-agent systems subject to linear temporal logic LTL specifications. The framework protects sensitive information from a passive intruder with partial observations of the agents' motion. Security in multi-agent...

Cryptographic and Information-Theoretic Security Capacities for General Arbitrarily Varying Wiretap Channels

We compare the strong secrecy capacities of Arbitrarily Varying Wiretap Channels AVWCs and General Arbitrary Varying Wiretap Channels GAVWCs with their capacities under semantic secrecy constraint and other equivalent cryptographic secrecy constraints. It turns out that the average error and stro...

Joint Secrecy and Covert Communication (JSACC): An Enhanced Physical Layer Security Approach

In this paper, we propose an enhanced physical layer security approach, named joint secrecy and covert communication JSACC, which aims to improve the performance of physical layer security PLS. The JSACC system can dynamically switch between secrecy mode and covert mode according to the channel...

FoSAM: Forward Secret Messaging in Ad-Hoc Networks

Apps such as Firechat and Bridgefy have been used during recent protests in Hong Kong and Iran, as they allow communication over ad-hoc wireless networks even when internet access is restricted. However, these apps do not provide sufficient protection as they do not achieve forward secrecy in...

Artificial Noise Versus Artificial Noise Elimination: Redefining Scaling Laws of Physical Layer Security

Artificial noise AN is a key physical-layer security scheme for wireless communications over multiple-input multiple-output wiretap channels. Recently, artificial noise elimination ANE has emerged as a strategy to mitigate the impact of AN on eavesdroppers. However, the influence of ANE on the...

Deep Learning-Driven Friendly Jamming for Secure Multicarrier ISAC under Channel Uncertainty

Integrated sensing and communication ISAC systems promise efficient spectrum utilization by jointly supporting radar sensing and wireless communication. This paper presents a deep learning-driven framework for enhancing physical-layer security in multicarrier ISAC systems under imperfect channel...

Drawing the LINE: Cryptographic Analysis and Security Improvements for the LINE E2EE Protocol

LINE has emerged as one of the most popular communication platforms in many East Asian countries, including Thailand and Japan, with millions of active users. Therefore, it is essential to understand its security guarantees. In this work, we present the first provable security analysis of the LIN...

Secrecy and Verifiability: An Introduction to Electronic Voting

Democracies are built upon secure and reliable voting systems. Electronic voting systems seek to replace ballot papers and boxes with computer hardware and software. Proposed electronic election schemes have been subjected to scrutiny, with researchers spotting inherent faults and weaknesses...

Secure Integrated Sensing and Communication against Communication and Sensing Eavesdropping

Sensing privacy and communication confidentiality play fundamentally different but interconnected roles in adversarial wireless environments. Capturing this interplay within a single physical-layer framework is particularly challenging in integrated sensing and communication ISAC systems, where t...

Juniper Networks Junos Space < 24.1R5 Use of a Broken or Risky Cryptographic Algorithm (JSA106006)

The version of Juniper Networks Junos Space on the remote device is prior to 24.1R5. It is, therefore, affected by a use of a broken or risky cryptographic algorithm vulnerability: - A Use of a Broken or Risky Cryptographic Algorithm vulnerability in the TLS/SSL server of Juniper Networks Junos...

CVE-2026-21907

A Use of a Broken or Risky Cryptographic Algorithm vulnerability in the TLS/SSL server of Juniper Networks Junos Space allows the use of static key ciphers ssl-static-key-ciphers, reducing the confidentiality of on-path traffic communicated across the connection. These ciphers also do not support...

CVE-2026-21907

A Use of a Broken or Risky Cryptographic Algorithm vulnerability in the TLS/SSL server of Juniper Networks Junos Space allows the use of static key ciphers ssl-static-key-ciphers, reducing the confidentiality of on-path traffic communicated across the connection. These ciphers also do not support...

CVE-2026-21907

A Use of a Broken or Risky Cryptographic Algorithm vulnerability in the TLS/SSL server of Juniper Networks Junos Space allows the use of static key ciphers ssl-static-key-ciphers, reducing the confidentiality of on-path traffic communicated across the connection. These ciphers also do not support...

CVE-2026-21907

A Use of a Broken or Risky Cryptographic Algorithm vulnerability in the TLS/SSL server of Juniper Networks Junos Space allows the use of static key ciphers ssl-static-key-ciphers, reducing the confidentiality of on-path traffic communicated across the connection. These ciphers also do not support...

CVE-2026-21907 Junos Space: TLS/SSL server supports use of static key ciphers (ssl-static-key-ciphers)

A Use of a Broken or Risky Cryptographic Algorithm vulnerability in the TLS/SSL server of Juniper Networks Junos Space allows the use of static key ciphers ssl-static-key-ciphers, reducing the confidentiality of on-path traffic communicated across the connection. These ciphers also do not support...

CVE-2026-21907 Junos Space: TLS/SSL server supports use of static key ciphers (ssl-static-key-ciphers)

A Use of a Broken or Risky Cryptographic Algorithm vulnerability in the TLS/SSL server of Juniper Networks Junos Space allows the use of static key ciphers ssl-static-key-ciphers, reducing the confidentiality of on-path traffic communicated across the connection. These ciphers also do not support...

EUVD-2026-2700

A Use of a Broken or Risky Cryptographic Algorithm vulnerability in the TLS/SSL server of Juniper Networks Junos Space allows the use of static key ciphers ssl-static-key-ciphers, reducing the confidentiality of on-path traffic communicated across the connection. These ciphers also do not support...

CVE-2026-21907

CVE-2026-21907 affects Juniper Networks Junos Space before version 24.1R5. The TLS/SSL server allows static key ciphers (ssl-static-key-ciphers) that do not support Perfect Forward Secrecy, reducing long-term and on-path confidentiality. Affected product/version is Junos Space prior to 24.1R5; no...

PT-2026-3121

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos Space versions prior to 24.1R5 Description The TLS/SSL server in Juniper Networks Junos Space allows the use of static key ciphers, which reduces the confidentiality of on-path traffic. These ciphers do not support Perfe...