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Search Publications by: Anoop Singhal (Fed)

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Displaying 51 - 75 of 134

Threat Modeling for Cloud Infrastructures

December 21, 2018
Author(s)
Nawaf Alhebaishi, Lingyu Wang, Anoop Singhal
Today's businesses are increasingly relying on the cloud as an alternative IT solution due to its flexibility and lower cost. Compared to traditional enterprise networks, a cloud infrastructure is typically much larger and more complex. Understanding the

Towards Cyber Resiliency in the Context of Cloud Computing

November 30, 2018
Author(s)
Xiaoyan Sun, Peng Liu, Anoop Singhal
Correct and accurate mission impact assessment is the essential prerequisite of mission-aware cyber resilience. However, an overlooked gap has been existing between mission impact assessment and cyber resilience. This article attempts to bridge the gap by

Modeling and Mitigating the Insider Threat of Remote Administrators in Clouds

July 10, 2018
Author(s)
Nawaf Alhebaishi, Lingyu Wang, Sushil Jajodia, Anoop Singhal
As today's cloud providers strive to attract customers with better services and less downtime in a highly competitive market, they increasingly rely on remote administrators including those from third party providers for fulfilling regular maintenance

Surviving Unpatchable Vulnerabilities through Multi-Option Network Hardening

March 23, 2018
Author(s)
Daniel Borbor, Lingyu Wang, Sushil Jajodia, Anoop Singhal
The administrators of a mission critical network usually have to worry about non-traditional threats, e.g., how to live with known, but unpatchable vulnerabilities,and how to improve the network's resilience against potentially unknown vulnerabilities. To

A Layered Graphical Model for Mission Attack Impact Analysis

December 21, 2017
Author(s)
Changwei Liu, Anoop Singhal, Duminda Wijesekera
In this paper, we describe a layered graphical model to analyze the mission impacts of attacks for forensic investigation. Our model has three layers: the upper layer models operational tasks and their dependencies; the middle layer reconstructs attack

Towards Probabilistic Identification of Zero-day Attack Paths

October 24, 2017
Author(s)
Xiaoyan Sun, Dai Jun, Peng Liu, Anoop Singhal, John Yen
Zero-day attacks continue to challenge the enterprise network security defense. A zero-day attack path is formed when a multi- step attack contains one or more zero-day exploits. Detecting zero-day attack paths in time could enable early disclosure of zero

Identifying Evidence for Implementing a Cloud Forensic Analysis Framework

September 28, 2017
Author(s)
Changwei Liu, Anoop Singhal, Duminda Wijesekera
Cloud computing provides several benefits to organizations such as increased flexibility, scalability and reduced cost. However, it provides several challenges for digital forensics and criminal investigation. Some of these challenges are the dependence of

Towards Actionable Mission Impact Assessment in the Context of Cloud Computing

June 22, 2017
Author(s)
Xiaoyan Sun, Anoop Singhal, Peng Liu
Today's cyber-attacks towards enterprise networks often undermine and even fail the mission assurance of victim networks. Mission cyber resilience (or active cyber defense) is critical to prevent or minimize negative consequences towards missions. Without

Threat Modeling for Cloud Data Center Infrastructures

December 29, 2016
Author(s)
Nawaf Alhebaishi, Lingyu Wang, Sushil Jajodia, Anoop Singhal
Cloud computing has undergone rapid expansion throughout the last decade. Many companies and organizations have made the transition from traditional data centers to the cloud due to its flexibility and lower cost. However, traditional data centers are

A Probabilistic Network Forensics Model for Evidence Analysis

September 20, 2016
Author(s)
Changwei Liu, Anoop Singhal, Duminda Wijesekera
Modern-day attackers tend to use sophisticated multi-stage/multi-host attack techniques and anti-forensics tools to cover their attack traces. Due to the current limitations of intrusion detection and forensic analysis tools, reconstructing attack
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