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A the Hacker
A The Hacker Madame Curie once said “En science, nous devons nous int´eresser aux choses, non aux personnes [In science, we should be interested in things, not in people].” Things, however, have since changed, and today we have to be interested not just in the facts of computer security and crime, but in the people who perpetrate these acts. Hence this discussion of hackers. Over the centuries, the term “hacker” has referred to various activities. We are familiar with usages such as “a carpenter hacking wood with an ax” and “a butcher hacking meat with a cleaver,” but it seems that the modern, computer-related form of this term originated in the many pranks and practi- cal jokes perpetrated by students at MIT in the 1960s. As an example of the many meanings assigned to this term, see [Schneier 04] which, among much other information, explains why Galileo was a hacker but Aristotle wasn’t. A hack is a person lacking talent or ability, as in a “hack writer.” Hack as a verb is used in contexts such as “hack the media,” “hack your brain,” and “hack your reputation.” Recently, it has also come to mean either a kludge, or the opposite of a kludge, as in a clever or elegant solution to a difficult problem. A hack also means a simple but often inelegant solution or technique. The following tentative definitions are quoted from the jargon file ([jargon 04], edited by Eric S. Raymond): 1. A person who enjoys exploring the details of programmable systems and how to stretch their capabilities, as opposed to most users, who prefer to learn only the minimum necessary. -
Flow-Level Traffic Analysis of the Blaster and Sobig Worm Outbreaks in an Internet Backbone
Flow-Level Traffic Analysis of the Blaster and Sobig Worm Outbreaks in an Internet Backbone Thomas Dübendorfer, Arno Wagner, Theus Hossmann, Bernhard Plattner ETH Zurich, Switzerland [email protected] DIMVA 2005, Wien, Austria Agenda 1) Introduction 2) Flow-Level Backbone Traffic 3) Network Worm Blaster.A 4) E-Mail Worm Sobig.F 5) Conclusions and Outlook © T. Dübendorfer (2005), TIK/CSG, ETH Zurich -2- 1) Introduction Authors Prof. Dr. Bernhard Plattner Professor, ETH Zurich (since 1988) Head of the Communication Systems Group at the Computer Engineering and Networks Laboratory TIK Prorector of education at ETH Zurich (since 2005) Thomas Dübendorfer Dipl. Informatik-Ing., ETH Zurich, Switzerland (2001) ISC2 CISSP (Certified Information System Security Professional) (2003) PhD student at TIK, ETH Zurich (since 2001) Network security research in the context of the DDoSVax project at ETH Further authors: Arno Wagner, Theus Hossmann © T. Dübendorfer (2005), TIK/CSG, ETH Zurich -3- 1) Introduction Worm Analysis Why analyse Internet worms? • basis for research and development of: • worm detection methods • effective countermeasures • understand network impact of worms Wasn‘t this already done by anti-virus software vendors? • Anti-virus software works with host-centric signatures Research method used 1. Execute worm code in an Internet-like testbed and observe infections 2. Measure packet-level traffic and determine network-centric worm signatures on flow-level 3. Extensive analysis of flow-level traffic of the actual worm outbreaks captured in a Swiss backbone © T. Dübendorfer (2005), TIK/CSG, ETH Zurich -4- 1) Introduction Related Work Internet backbone worm analyses: • Many theoretical worm spreading models and simulations exist (e.g. -
Computer Viruses, in Order to Detect Them
Behaviour-based Virus Analysis and Detection PhD Thesis Sulaiman Amro Al amro This thesis is submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy Software Technology Research Laboratory Faculty of Technology De Montfort University May 2013 DEDICATION To my beloved parents This thesis is dedicated to my Father who has been my supportive, motivated, inspired guide throughout my life, and who has spent every minute of his life teaching and guiding me and my brothers and sisters how to live and be successful. To my Mother for her support and endless love, daily prayers, and for her encouragement and everything she has sacrificed for us. To my Sisters and Brothers for their support, prayers and encouragements throughout my entire life. To my beloved Family, My Wife for her support and patience throughout my PhD, and my little boy Amro who has changed my life and relieves my tiredness and stress every single day. I | P a g e ABSTRACT Every day, the growing number of viruses causes major damage to computer systems, which many antivirus products have been developed to protect. Regrettably, existing antivirus products do not provide a full solution to the problems associated with viruses. One of the main reasons for this is that these products typically use signature-based detection, so that the rapid growth in the number of viruses means that many signatures have to be added to their signature databases each day. These signatures then have to be stored in the computer system, where they consume increasing memory space. Moreover, the large database will also affect the speed of searching for signatures, and, hence, affect the performance of the system. -
Chapter 3: Viruses, Worms, and Blended Threats
Chapter 3 Chapter 3: Viruses, Worms, and Blended Threats.........................................................................46 Evolution of Viruses and Countermeasures...................................................................................46 The Early Days of Viruses.................................................................................................47 Beyond Annoyance: The Proliferation of Destructive Viruses .........................................48 Wiping Out Hard Drives—CIH Virus ...................................................................48 Virus Programming for the Masses 1: Macro Viruses...........................................48 Virus Programming for the Masses 2: Virus Generators.......................................50 Evolving Threats, Evolving Countermeasures ..................................................................51 Detecting Viruses...................................................................................................51 Radical Evolution—Polymorphic and Metamorphic Viruses ...............................53 Detecting Complex Viruses ...................................................................................55 State of Virus Detection.........................................................................................55 Trends in Virus Evolution..................................................................................................56 Worms and Vulnerabilities ............................................................................................................57 -
Combating Spyware in the Enterprise.Pdf
www.dbebooks.com - Free Books & magazines Visit us at www.syngress.com Syngress is committed to publishing high-quality books for IT Professionals and delivering those books in media and formats that fit the demands of our cus- tomers. We are also committed to extending the utility of the book you purchase via additional materials available from our Web site. SOLUTIONS WEB SITE To register your book, visit www.syngress.com/solutions. Once registered, you can access our [email protected] Web pages. There you will find an assortment of value-added features such as free e-booklets related to the topic of this book, URLs of related Web site, FAQs from the book, corrections, and any updates from the author(s). ULTIMATE CDs Our Ultimate CD product line offers our readers budget-conscious compilations of some of our best-selling backlist titles in Adobe PDF form. These CDs are the perfect way to extend your reference library on key topics pertaining to your area of exper- tise, including Cisco Engineering, Microsoft Windows System Administration, CyberCrime Investigation, Open Source Security, and Firewall Configuration, to name a few. DOWNLOADABLE EBOOKS For readers who can’t wait for hard copy, we offer most of our titles in download- able Adobe PDF form. These eBooks are often available weeks before hard copies, and are priced affordably. SYNGRESS OUTLET Our outlet store at syngress.com features overstocked, out-of-print, or slightly hurt books at significant savings. SITE LICENSING Syngress has a well-established program for site licensing our ebooks onto servers in corporations, educational institutions, and large organizations. -
Symantec Internet Security Threat Report
Symantec Internet EXECUTIVE SUMMARY Symantec Internet Security Threat Report September 2003 EXECUTIVE EDITOR Executive Summary Linda McCarthy Symantec Office of the CTO The Symantec Internet Security Threat Report provides a six-month update about Internet threat MANAGER, DEVELOPMENT activity1. It includes analysis of network-based attacks, a review of known vulnerabilities, and David Ahmad Symantec Security Response highlights of malicious code. This summary of that report can alert executives to impending threats and current trends. SENIOR THREAT ANALYST Cori Lynn Arnold Symantec Managed Security With over 20,000 sensors monitoring network activity in over 180 countries, Symantec has Services established one of the most comprehensive sources of Internet threat data in the world, giving SENIOR MANAGER, ANALYSIS Symantec's analysts a superior source of attack data from which to spot important trends. OPERATIONS These trends educate executives about potential threats and exposures, and using the data Brian Dunphy Symantec Managed Security can help them identify weaknesses in their own security architecture or policies. Services In August 2003, the Win32.Blaster blended threat rapidly spread worldwide, and several other SENIOR MANAGER, DEVELOPMENT Oliver Friedrichs highly severe worms followed. In only eight days the pace and frequency of these threats created Symantec Security Response havoc for systems administrators as well as for PC home users, with an estimated cost of damages 2 RESEARCH FELLOW running up to $2 billion . This report -
Email Worm Modeling and Defense
Email Worm Modeling and Defense CliffC.Zou∗,DonTowsley†, Weibo Gong∗ ∗Department of Electrical & Computer Engineering †Department of Computer Science University of Massachusetts, Amherst, MA 01003 {czou, gong}@ecs.umass.edu, [email protected] Abstract— Email worms constitute one of the major Internet little differences in terms of the propagation dynamics of email security problems. In this paper, we present an email worm worms. model that accounts for the behaviors of email users by con- Based on the above email worm model, we study the ef- sidering email checking time and the probability of opening email attachments. Email worms spread over a logical network fectiveness of “selective immunization defense”, i.e., selecting defined by email address relationship, which plays an important some most connected email users’ computers to make them role in determining the spreading dynamics of an email worm. immune to an email worm. The results explain why selective Our observations suggest that the node degrees of an email immunization defense against email worm propagation is quite network are heavy-tailed distributed. We compare email worm effective for a power law topology but not so good for the other propagation on three topologies: power law, small world and random graph topologies; and then study how the topology two topologies. affects immunization defense on email worms. The impact of The rest of the paper is organized as follows. Section II the power law topology on the spread of email worms is mixed: surveys related work. Section III presents the email worm email worms spread more quickly on a power law topology than propagation model. -
Who Wrote Sobig? Copyright 2003-2004 Authors Page 1 of 48
Who Wrote Sobig? Copyright 2003-2004 Authors Page 1 of 48 Who Wrote Sobig? Version 1.0: 19-August-2003. Version 1.1: 25-August-2003. Version 1.2: 19-November-2003. Version 1.3: 17-July-2004. This sanitized variation for public release. Scheduled for release: 1-November-2004. This document is Copyright 2003-2004 by the authors. The PGP key included within this document identifies the authors. Who Wrote Sobig? Copyright 2003-2004 Authors Page 2 of 48 Table of Contents Table of Contents................................................................................................................................................... 2 1 About This Document..................................................................................................................................... 3 2 Overview........................................................................................................................................................ 5 3 Spam and Virus Release History..................................................................................................................... 6 3.1 Identifying Tools .................................................................................................................................... 6 3.2 Identifying Individuals and Specific Groups ............................................................................................ 6 3.3 Identifying Open Proxies and Usage........................................................................................................ 8 3.4 -
THE CONFICKER MYSTERY Mikko Hypponen Chief Research Officer F-Secure Corporation Network Worms Were Supposed to Be Dead. Turns O
THE CONFICKER MYSTERY Mikko Hypponen Chief Research Officer F-Secure Corporation Network worms were supposed to be dead. Turns out they aren't. In 2009 we saw the largest outbreak in years: The Conficker aka Downadup worm, infecting Windows workstations and servers around the world. This worm infected several million computers worldwide - most of them in corporate networks. Overnight, it became as large an infection as the historical outbreaks of worms such as the Loveletter, Melissa, Blaster or Sasser. Conficker is clever. In fact, it uses several new techniques that have never been seen before. One of these techniques is using Windows ACLs to make disinfection hard or impossible. Another is infecting USB drives with a technique that works *even* if you have USB Autorun disabled. Yet another is using Windows domain rights to create a remote jobs to infect machines over corporate networks. Possibly to most clever part is the communication structure Conficker uses. It has an algorithm to create a unique list of 250 random domain names every day. By precalcuting one of these domain names and registering it, the gang behind Conficker could take over any or all of the millions of computers they had infected. Case Conficker The sustained growth of malicious software (malware) during the last few years has been driven by crime. Theft – whether it is of personal information or of computing resources – is obviously more successful when it is silent and therefore the majority of today's computer threats are designed to be stealthy. Network worms are relatively "noisy" in comparison to other threats, and they consume considerable amounts of bandwidth and other networking resources. -
Contents in This Issue
FEBRUARY 2004 The International Publication on Computer Virus Prevention, Recognition and Removal CONTENTS IN THIS ISSUE 2 COMMENT A NEW TREND IN Are your networks secure? VIRUS WRITING? Following in the footsteps 3 NEWS of W32/Bugbear.A, VB2004 call for papers W32/Mimail.I and .J took Divine intervention the concern of identity theft Waiting, reflecting and removing to another level, producing a plausible-looking popup and web page and asking questions that are favoured security checks of many 3 VIRUS PREVALENCE TABLE banks. Stuart Taylor asks: is there a criminal element entering virus writing? 4 FEATURE page 11 Outbreak response times: putting AV to the test TESTING TIMES It’s not just a product’s ability to detect malware 7 TUTORIAL that is of vital importance to the user, but the speed Mission impossible: the Messenger with which the developer produces an update in and others outbreak situations. Andreas Marx puts AV response times to the test. 11 OPINION page 4 Misguided or malevolent? New trends in virus writing COMPARATIVE REVIEW Matt Ham lines up the AV products for 12 COMPARATIVE REVIEW Windows NT. page 12 Windows NT 4.0 20 END NOTES & NEWS This month: Anti-spam news and events, Habeas delivering the goods, ASRG summary. ISSN 0956-9979 COMMENT ‘Until now, most who are not located in the same office, who may be travelling on business or may be working from home. business use of Managers from any location can respond to instant instant messaging messages with quick decisions. Presence-awareness allows each user to see the online status and availability has been of the of other colleagues on the system. -
Media Diffusion of Computer Security Threats
Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1-1-2006 It came from the Internet : media diffusion of computer security threats Adam Paul Patridge Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Recommended Citation Patridge, Adam Paul, "It came from the Internet : media diffusion of computer security threats" (2006). Retrospective Theses and Dissertations. 19035. https://lib.dr.iastate.edu/rtd/19035 This Thesis is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. It came from the Internet: Media diffusion of computer security threats by Adam Paul Patridge A thesis submitted to the graduate faculty in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Major: Human Computer Interaction Program of Study Committee: Chad Harms, Major Professor Kim Smith Anthony Townsend Iowa State University Ames, Iowa 2006 Copyright ©Adam Paul Patridge, 2006. All rights reserved. 11 Graduate College Iowa State University This is to certify that the master's thesis of Adam Paul Patridge has met the thesis requirements of Iowa State University Signatures have been redacted for privacy 111 TABLE OF CONTENTS CHAPTER 1. INTRODUCTION 1 CHAPTER 2. LITERATURE REVIEW 4 COMPUTER SECURITY 4 Computer Security Threats 4 Lifespan of a Threat 6 DIFFUSION OF INNOVATION 7 History of Diffusion Research 8 Innovation Adoption Process 10 Diffusion of Innovation Components 12 Diffusion Criticisms 18 RESEARCH QUESTIONS 19 CHAPTER 3. -
Progress Made, Trends Observed a White Paper from the Microsoft Antimalware Team Msrwindows Malicious Software Removalt Tool
Progress Made, Trends Observed A White Paper from the Microsoft Antimalware Team MSRWindows Malicious Software RemovalT Tool Matthew Braverman Program Manager Microsoft Antimalware Team Acknowledgements I would like to thank the following individuals for their contribution to this paper: Mike Chan, Brendan Foley, Jason Garms, Robert Hensing, Ziv Mador, Mady Marinescu, Michael Mitchell, Adam Overton, Matt Thomlinson, and Jeff Williams The information contained in this document represents the current view of Microsoft Corporation on the issues discussed as of the date of publication. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information presented after the date of publication. This White Paper is for informational purposes only. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS DOCUMENT. Complying with all applicable copyright laws is the responsibility of the user. Without limiting the rights under copyright, no part of this document may be reproduced, stored in or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photo- copying, recording, or otherwise), or for any purpose, without the express written permission of Microsoft Corporation. Microsoft may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document. Except as expressly provided in any written license agreement from Microsoft, the furnishing of this document does not give you any license to these patents, trademarks, copyrights, or other intellectual property. Copyright © 2006 Microsoft Corporation. All rights reserved.