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Earlier sources: Security
Digital security protects systems, software, accounts, and information from misuse. Explore cybersecurity, vulnerabilities, threat intelligence, cryptography, privacy, and identity, with links to the underlying advisories and research.
SYMTRI organizes observations from public sources into a living map. Connections reflect shared subject matter; they do not establish causation or endorse a source.
Open in the map ↗637 classified signals in the fourteen-day window. Recent momentum: steady. These counts include signals awaiting readable evidence.
Earlier sources
Up to ten sources with readable evidence, ordered by their feed timestamp. These archive sources can be older than the live fourteen-day window. This list is a sample, not a measure of total activity. Dates distinguish paper publication, repository creation, model/dataset activity, Hacker News posts, and KEV catalog additions. “First archived” records when SYMTRI first stored the signal.
- OpenAlex · Published · First archived
An adaptive behavioural zero-trust security framework with proactive cryptographic caching for continuous authentication in 5G non-terrestrial networks ↗
Abstract 5G non-terrestrial networks (NTNs) are key to future global broadband and military communications, but their high latency and dynamic topologies require security approaches beyond perimeter defences and static authentication. To overcome these vulnerabilities, we propose an adaptive behavioural zero trust security framework (BZTSF) for continuous 5G NTN authentication. Our method continuously evaluates node trustworthiness using network signal information processed by an isolation forest machine learning algorithm. A proactive cryptographic caching mechanism reduces re-authentication…
- OpenAlex · Published · First archived
An Explainable Cyber Range-to-MATLAB Co-Simulation Framework for Attack-Chain and Power-Service Impact Analysis in Electric Power Networks ↗
Complex cyberattacks on electric power networks traverse communication links, control objects and power-service processes, making it difficult to explain how network evidence propagates to operational impact. This paper proposes an explainable cyber range-to-MATLAB co-simulation framework that couples traffic-oriented security emulation with power service simulation. The cyber range generates security events, traffic records, alarms and asset topology evidence, while MATLAB models calculate distribution network states, line power flows, switching states, energy-storage PCS states and service-i…
- OpenAlex · Published · First archived
PPEPV‐RDL: Achieving Privacy‐Preserving, Efficient, Publicly Verifiable Rational Delegation Learning ↗
ABSTRACT Delegation learning is an implementation approach within privacy‐preserving machine learning (PPML). It refers to that the delegator outsources the training task to servers with strong computing power due to its own limited computing resources, and the servers return the correct training results and get the service revenue. However, it is difficult to balance the security and usability of delegation learning, which brings great technical challenges to the design of security mechanisms for delegation learning. In this paper, we propose a privacy‐preserving, efficient and publicly verif…
- OpenAlex · Published · First archived
Risk-Adaptive Masking for Privacy–Utility Balance in OCR-Based Document De-Identification ↗
OCR-based document de-identification must protect personally identifiable information (PII) while preserving information needed for document analysis. Uniform masking may insufficiently protect high-risk PII or unnecessarily remove useful low-risk context. This study proposes a risk-adaptive masking framework that selects treatment based on PII type, identification risk, document-use environment, and analytical necessity. Eighteen PII types were organized into three risk-treatment groups, and processing environments were classified as controlled internal use, controlled third-party provision,…
- OpenAlex · Published · First archived
A Survey of Smart Contract Vulnerability Detection Based on Tree Representation ↗
Smart contracts, characterized by automation, transparency, and decentralization, can establish efficient, secure, and reliable blockchain fund management and data processing mechanisms, playing a crucial supporting role in blockchain application scenarios. However, security issues in smart contracts are increasingly prominent, making vulnerability detection a critical research focus; detection methods based on tree representation have emerged as a promising direction in this field. A comprehensive review of tree representation-based smart contract vulnerability detection methods is provided i…
- OpenAlex · Published · First archived
Frequency Security-Constrained Coordinated Optimal Configuration of Multi-Type Flexible Resources ↗
With the large-scale integration of converter-based renewable energy sources replacing conventional units, the risks of power system supply–demand imbalance and post-contingency frequency instability have increased dramatically. Expanding the flexible resource portfolio and achieving coordinated optimization of operation and frequency response between newly installed flexible resources and existing resources has thus become a critical issue. This paper proposes a coordinated optimal configuration method for multi-type flexible resources considering frequency security. The operational model for…
- OpenAlex · Published · First archived
Star-ov: satellite-oriented trusted authorization and responsibility with stratified model encryption and ownership verifications ↗
Abstract With the increasing adoption of deep neural networks (DNNs) in remote sensing interpretation and on-orbit intelligent processing, protecting the intellectual property of deployed models faces new challenges, including limited onboard computational resources, constrained satellite–ground communication bandwidth, differentiated multi-user services, and difficulty in ownership attribution after model leakage. Existing model protection approaches mainly rely on either active encryption or passive watermarking mechanisms, which are insufficient to simultaneously satisfy the requirements of…
- OpenAlex · Published · First archived
Barriers Faced by EFL Students for Accessing Cyber Learning in Rural School ↗
This study aims to identify the obstacles faced by EFL students in accessing cyber-based learning in rural schools. Using a qualitative approach, data were collected through interviews with twelve students in grades VII to IX. The findings reveal several interconnected challenges, including low English proficiency, limited digital learning support, anxiety, and low self-confidence. Students also struggle with low motivation, minimal interest and aptitude in English, and the dominance of local languages. Difficulties in adapting to online learning are exacerbated by limited digital literacy and…
- OpenAlex · Published · First archived
Frequency security-aware production scheduling of utility-scale off-grid renewable P2H systems coordinating heterogeneous electrolyzers ↗
Renewable power-to-hydrogen (ReP2H) enables large-scale renewable energy utilization and supports the decarbonization of hard-to-abate sectors, such as chemicals and maritime transport, via hydrogen-based renewable ammonia and methanol fuels. As a result, utility-scale ReP2H projects are expanding worldwide. However, off-grid ReP2H systems exhibit low inertia due to their converter-dominated nature, making frequency security a critical concern. Although recent studies show that electrolyzers can contribute to frequency regulation (FR), their support capability depends on operating states and l…
- Hacker News · Posted on Hacker News · First archived
Air Canada's woeful security at cargo warehouse ↗
Hacker News discussion.
Live window recorded . This is the ingestion observation time, not the publication or discovery date of each source.
How to assess evidence about Security
Check each original source for its methods, release status, limitations, and supporting data. A repository announcement, a preprint, and a published study provide different kinds of evidence. SYMTRI’s subject classification helps discovery; it does not independently validate the source’s claims.
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