Abstract This paper addresses denial of service vulnerabilities (DOS) in 802.11 wireless LANs that arise from the 802.11 distributed coordination function (DCF). We demonstrate that the DCF is vulnerable to equivalent DOS attacks at both the MAC and PHY layers. Denial of service attacks against the DCF are easily staged by a single adversary and affect both infrastructure and mobile ad hoc netw...

Cyber ​​threats have been extraordinary increased in recent years. Cyber ​​attackers, including government agencies or hackers, have made significant advances in the use of various tools for attacking target systems in some countries particularly on Islamic republic of Iran. The complexity of cyber threats and the devastating effects of them on critical systems highlights necessity of cyber thr...

A goal of World-wide Web operating systems (WebOSes) is to enable clients to download executable content from servers connected to the World-wide Web (WWW). This will make applications more easily available to clients, but some of these applications may be malicious. Thus, a WebOS must be able to control the downloaded content's behavior. In this paper, we examine a speci c type of malicious ac...

Network denial of service attacks have become a widespread problem on the Internet. However, denial of service is often considered to be an implementation issue by protocol designers. In this paper I present a survey of the literature on designing denial of service resistant communication protocols. I consider several different types of resources vulnerable to resource consumption attacks, and ...

The uncertainty which has characterised the financial crisis has encouraged renewed attention to uncertainty in economics. Yet, not only is uncertainty seen as unpalatable in financial markets and economic life more generally, it also poses challenges for economists to the extent that uncertainty is absent from most of mainstream theory. The purpose of this paper is to consider the reasons for ...

In this study we use Politeness Theory to understand the trust violation and restoration process. The study examines the role of CEO gender, perceived CEO status, and response type (apology vs. denial) on restored trust and trusting beliefs in the case of an insider data breach incident. The data were collected using a scenario based experiment from students studying in a Midwestern University....

DISCLAIMER: To the extent permitted by law, this document is provided without any liability or warranty. Accordingly it is to be used only for the purposes specified and the reliability of any assessment or evaluation arising from it are matters for the independent judgment of users. This document is intended as a general guide only and users should seek professional advice as to their specific...

The IEEE 802.15.4 standard features some optional services, including the Guaranteed Time Slot (GTS) mechanism. It provides network devices with collision-free access to the medium to assure Quality of Service. GTS suffers from a severe security vulnerability: an adversary can easily perform a Denial of Service attack by selectively jamming collision-free communications. We present Secure GTS, ...