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Cyber threat intelligence (CTI) is practical real-world information that is collected with the purpose of assessing threats in cyber-physical systems (CPS). A practical notation for sharing CTI is STIX. STIX offers facilities to create,…

Cryptography and Security · Computer Science 2022-05-13 Ricardo M. Czekster , Roberto Metere , Charles Morisset

In the digital era, threat actors employ sophisticated techniques for which, often, digital traces in the form of textual data are available. Cyber Threat Intelligence~(CTI) is related to all the solutions inherent to data collection,…

Cryptography and Security · Computer Science 2023-11-16 Marco Arazzi , Dincy R. Arikkat , Serena Nicolazzo , Antonino Nocera , Rafidha Rehiman K. A. , Vinod P. , Mauro Conti

As AI systems increasingly influence critical decisions, they face threats that exploit reasoning mechanisms rather than technical infrastructure. We present a framework for cognitive cybersecurity, a systematic protection of AI reasoning…

Cryptography and Security · Computer Science 2025-08-25 Yuksel Aydin

Threat modeling is a popular method to securely develop systems by achieving awareness of potential areas of future damage caused by adversaries. However, threat modeling for systems relying on Artificial Intelligence is still not well…

Cryptography and Security · Computer Science 2024-06-04 Jan von der Assen , Jamo Sharif , Chao Feng , Christian Killer , Gérôme Bovet , Burkhard Stiller

Threat intelligence on malware attacks and campaigns is increasingly being shared with other security experts for a cost or for free. Other security analysts use this intelligence to inform them of indicators of compromise, attack…

Cryptography and Security · Computer Science 2023-01-20 Nidhi Rastogi , Sharmishtha Dutta , Mohammed J. Zaki , Alex Gittens , Charu Aggarwal

We present a new machine learning and text information extraction approach to detection of cyber threat events in Twitter that are novel (previously non-extant) and developing (marked by significance with respect to similarity with a…

Information Retrieval · Computer Science 2019-07-19 Avishek Bose , Vahid Behzadan , Carlos Aguirre , William H. Hsu

The automation of Cyber Threat Intelligence (CTI) relies heavily on Named Entity Recognition (NER) to extract critical entities from unstructured text. Currently, Large Language Models (LLMs) primarily address this task through…

Cryptography and Security · Computer Science 2025-12-23 Jiaren Peng , Hongda Sun , Xuan Tian , Cheng Huang , Zeqing Li , Rui Yan

Threat hunting is a proactive methodology for exploring, detecting and mitigating cyberattacks within complex environments. As opposed to conventional detection systems, threat hunting strategies assume adversaries have infiltrated the…

Cryptography and Security · Computer Science 2023-10-09 Ángel Casanova Bienzobas , Alfonso Sánchez-Macián

Large Language Models (LLMs) are intensively used to assist security analysts in counteracting the rapid exploitation of cyber threats, wherein LLMs offer cyber threat intelligence (CTI) to support vulnerability assessment and incident…

Cryptography and Security · Computer Science 2025-10-03 Luoxi Tang , Yuqiao Meng , Ankita Patra , Weicheng Ma , Muchao Ye , Zhaohan Xi

Financial institutions face increasing cyber risk while operating under strict regulatory oversight. To manage this risk, they rely heavily on Cyber Threat Intelligence (CTI) to inform detection, response, and strategic security decisions.…

Cryptography and Security · Computer Science 2026-03-25 Emir Karaosman , Advije Rizvani , Irdin Pekaric

Log-based cyber threat hunting has emerged as an important solution to counter sophisticated attacks. However, existing approaches require non-trivial efforts of manual query construction and have overlooked the rich external threat…

Cryptography and Security · Computer Science 2021-02-26 Peng Gao , Fei Shao , Xiaoyuan Liu , Xusheng Xiao , Zheng Qin , Fengyuan Xu , Prateek Mittal , Sanjeev R. Kulkarni , Dawn Song

Cyber threat intelligence (CTI) is central to modern cybersecurity, providing critical insights for detecting and mitigating evolving threats. With the natural language understanding and reasoning capabilities of large language models…

Cryptography and Security · Computer Science 2025-10-15 Yutong Cheng , Yang Liu , Changze Li , Dawn Song , Peng Gao

Twitter is recognized as a crucial platform for the dissemination and gathering of Cyber Threat Intelligence (CTI). Its capability to provide real-time, actionable intelligence makes it an indispensable tool for detecting security events,…

Cryptography and Security · Computer Science 2024-09-13 Jian Cui , Hanna Kim , Eugene Jang , Dayeon Yim , Kicheol Kim , Yongjae Lee , Jin-Woo Chung , Seungwon Shin , Xiaojing Liao

Efficient defense against dynamically evolving advanced persistent threats (APT) requires the structured threat intelligence feeds, such as techniques used. However, existing threat-intelligence extraction techniques predominantly focuses…

Cryptography and Security · Computer Science 2025-12-23 Ming Xu , Hongtai Wang , Jiahao Liu , Xinfeng Li , Zhengmin Yu , Weili Han , Hoon Wei Lim , Jin Song Dong , Jiaheng Zhang

Cyber threats have become increasingly prevalent and sophisticated. Prior work has extracted actionable cyber threat intelligence (CTI), such as indicators of compromise, tactics, techniques, and procedures (TTPs), or threat feeds from…

Cryptography and Security · Computer Science 2025-04-29 Saskia Laura Schröer , Noé Canevascini , Irdin Pekaric , Philine Widmer , Pavel Laskov

Cyber threat hunting is the practice of proactively searching for latent threats in a network. Engaging in threat hunting can be difficult due to the volume of network traffic, variety of adversary techniques, and constantly evolving…

Cryptography and Security · Computer Science 2025-03-10 Matthew J. Turner , Mike Carenzo , Jackie Lasky , James Morris-King , James Ross

Analyzing Open Source Intelligence (OSINT) from large volumes of data is critical for drafting and publishing comprehensive CTI reports. This process usually follows a three-stage workflow -- triage, deep search and TI drafting. While Large…

Cryptography and Security · Computer Science 2026-03-11 Xiangsen Chen , Xuan Feng , Shuo Chen , Matthieu Maitre , Sudipto Rakshit , Diana Duvieilh , Ashley Picone , Nan Tang

Open-source cyber threat intelligence (OSCTI) has become essential for keeping up with the rapidly changing threat landscape. However, current OSCTI gathering and management solutions mainly focus on structured Indicators of Compromise…

Cryptography and Security · Computer Science 2024-11-01 Peng Gao , Xiaoyuan Liu , Edward Choi , Sibo Ma , Xinyu Yang , Dawn Song

The rise of IT-dependent operations in modern organizations has heightened their vulnerability to cyberattacks. As a growing number of organizations include smart, interconnected devices in their systems to automate their processes, the…

Cryptography and Security · Computer Science 2024-06-21 Dincy R. Arikkat , Mert Cihangiroglu , Mauro Conti , Rafidha Rehiman K. A. , Serena Nicolazzo , Antonino Nocera , Vinod P

Public and commercial organizations extensively share cyberthreat intelligence (CTI) to prepare systems to defend against existing and emerging cyberattacks. However, traditional CTI has primarily focused on tracking known threat indicators…

Cryptography and Security · Computer Science 2023-07-13 Md Tanvirul Alam , Dipkamal Bhusal , Youngja Park , Nidhi Rastogi