Computer Security Fundamentals

Chuck Easttom has been in the IT industry for many years working in all aspects including network administration, software engineering, and IT managementFor the past 10 years he has been parttime teaching at colleges and doing corporate trainingFor the past 7 years, he has also been an independent consultant working with a variety of companies and serving as an expert consultant/witness in various computer casesChuck holds more than 28 different IT industry certifications, including the CISSP, ISSAP, Certified Ethical Hacker, Certified Hacking Forensics Investigator, EC Council Certified Security Administrator, and EC Council Certified InstructorHe has served as a subject matter expert for the Computer Technology Industry Association (CompTIA) in the development or revision of four of their certification tests, including the initial creation of their Security+ certification. Most recently he worked with the EC Council to develop their new advanced cryptography course, which he is teaching around the world.

In addition to this book, Chuck has authored 12 other titles on topics such as computer security, web development, programming, Linux, and computer crimeChuck also is a frequent guest speaker for computer groups, discussing computer securityYou can reach Chuck at his website www.chuckeasttom.com or by email at chuck@chuckeasttom.com

Introduction 1

Chapter 1: Introduction to Computer Security

Introduction

How Seriously Should You Take Threats to Network Security?

Identifying Types of Threats

    Malware

    Compromising System Security

    Denial of Service Attacks

    Web Attacks

    Session Hijacking

    DNS Poisoning

Assessing the Likelihood of an Attack on Your Network

Basic Security Terminology

    Hacker Slang

    Professional Terms

Concepts and Approaches

How Do Legal Issues Impact Network Security?

Online Security Resources

    CERT

    Microsoft Security Advisor

    F-Secure

    SANS Institute

Summary

Test Your Skills

Chapter 2: Networks and the Internet

Introduction

Network Basics

    The Physical Connection: Local Networks

    Faster Connection Speeds

    Data Transmission

How the Internet Works

    IP Addresses

    CIDR

    Uniform Resource Locators

History of the Internet

Basic Network Utilities

    IPConfig

    Ping

    Tracert

Other Network Devices

Advanced Network Communications Topics

    The OSI Model

    Media Access Control (MAC) Addresses

Summary

Test Your Skills

Chapter 3: Cyber Stalking, Fraud, and Abuse

Introduction

How Internet Fraud Works

    Investment Offers

    Auction Frauds

Identity Theft

    Phishing

Cyber Stalking

    Laws about Internet Fraud

Protecting Yourself against Cyber Crime

    Protecting against Investment Fraud

    Protecting against Identity Theft

    Secure Browser Settings

Summary

Test Your Skills

Chapter Footnotes

Chapter 4: Denial of Service Attacks

Introduction

Denial of Service

Illustrating an Attack

    Common Tools Used for DoS

    DoS Weaknesses

    Specific DoS Attacks

    Land Attack

    Distributed Denial of Service (DDoS)

Summary

Test Your Skills

Chapter 5: Malware

Introduction

Viruses

    How a Virus Spreads

    Recent Virus Examples

    W32/Netsky-P

    Troj/Invo-Zip

    MacDefender

    The Sobig Virus

    The Mimail Virus

    The Bagle Virus

    A Nonvirus Virus

    Rules for Avoiding Viruses

Trojan Horses .

The Buffer-Overflow Attack

The Sasser Virus/Buffer Overflow

Spyware

    Legal Uses of Spyware

    How Is Spyware Delivered to a Target System?

    Obtaining Spyware Software

Other Forms of Malware

    Rootkit

    Malicious Web-Based Code

    Logic Bombs

    Spam

Detecting and Eliminating Viruses and Spyware

    Antivirus Software

    Antispyware Software

Summary

Test Your Skills

Chapter 6: Techniques Used by Hackers

Introduction

Basic Terminology

The Reconnaissance Phase

    Passive Scanning Techniques

    Active Scanning Techniques

Actual Attacks

    SQL Script Injection

    Cross-Site Scripting

    Password Cracking

Summary

Test Your Skills

Chapter 7: Industrial Espionage in Cyberspace

Introduction

What Is Industrial Espionage?

Information as an Asset

Real-World Examples of Industrial Espionage

    Example 1: VIA Technology

    Example 2: General Motors

    Example 3: Interactive Television Technologies, Inc.

    Example 4: Bloomberg, Inc

    Example 5: Avant Software

Industrial Espionage and You

How Does Espionage Occur?

    Low-Tech Industrial Espionage

    Spyware Used in Industrial Espionage

    Steganography Used in Industrial Espionage

Phone Taps and Bugs

Protecting against Industrial Espionage

Industrial Espionage Act

Spear Phishing

Summary

Test Your Skills

Chapter 8: Encryption

Introduction

Cryptography Basics

History of Encryption

    The Caesar Cipher

    Multi-Alphabet Substitution

    Binary Operations

Modern Methods

    Single-Key (Symmetric) Encryption

    Public Key (Asymmetric) Encryption

Legitimate Versus Fraudulent Encryption Methods

    Digital Signatures

    Hashing

    Authentication

Encryptions Used in Internet

Virtual Private Networks

    PPTP

    L2TP

    IPsec

Summary

Test Your Skills

Chapter 9: Computer Security Software

Introduction

Virus Scanners

    How Does a Virus Scanner Work?

    Virus-Scanning Techniques

    Commercial Antivirus Software

Firewalls

    Benefits and Limitation of Firewalls

    Firewall Types and Components

    How Firewalls Examine Packets

    Firewall Configurations

    Commercial and Free Firewall Products

    Firewall Logs

Antispyware

Intrusion-Detection Software

    IDS Categorization

    IDS Approaches

    Snort

    Honey Pots

    Other Preemptive Techniques

Summary

Test Your Skills

Chapter 10: Security Policies

Introduction

What Is a Policy

Defining User Policies

    Passwords

    Internet Use

    Email Usage

    Installing/Uninstalling Software

    Instant Messaging

    Desktop Configuration

    Final Thoughts on User Policies

Defining System Administration Policies

    New Employees

    Departing Employees

    Change Requests

    Security Breaches

    Virus Infection

    Denial of Service Attacks

    Intrusion by a Hacker

Defining Access Control

Developmental Policies

Standards, Guidelines, and Procedures

Summary

Test Your Skills

Chapter 11: Network Scanning and Vulnerability Scanning

Introduction

Basics of Assessing a System

    Patch

    Ports

    Protect

    Policies

    Probe

    Physical

Securing Computer Systems

    Securing an Individual Workstation

    Securing a Server

    Securing a Network

Scanning Your Network

    MBSA

    NESSUS

Getting Professional Help

Summary

Test Your Skills

Chapter 12: Cyber Terrorism and Information Warfare

Introduction

Actual Cases of Cyber Terrorism

China Eagle Union

Economic Attacks

Military Operations Attacks

General Attacks

Supervisory Control and Data Acquisitions

Information Warfare

    Propaganda

    Information Control

    Disinformation

Actual Cases

Future Trends

    Positive Trends

    Negative Trends

Defense against Cyber Terrorism

Summary

Test Your Skills

Chapter 13: Cyber Detective

Introduction

General Searches

Court Records and Criminal Checks

    Sex Offender Registries

    Civil Court Records

    Other Resources

Usenet

Summary

Test Your Skills

Chapter 14: Introduction to Forensics

Introduction

General Guidelines

    Don’t Touch the Suspect Drive

    Document Trail

    Secure the Evidence

    FBI Forensics Guidelines

Finding Evidence on the PC

    Finding Evidence in the Browser

Finding Evidence in System Logs

    Windows Logs

    Linux Logs

Getting Back Deleted Files

Operating System Utilities

    Net Sessions

    Openfiles

    Fc

    Netstat

The Windows Registry

Summary

Test Your Skills

Appendix A: Glossary

Appendix B: Resources

General Computer Crime and Cyber Terrorism

General Knowledge

Cyber Stalking

Identity Theft

Port Scanners and Sniffers

Password Crackers

Countermeasures

Spyware

Counter Spyware

Cyber Investigation Tools

General Tools

Virus Research

9780789748904   TOC   12/6/2011

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