Symantec Internet Security Threat Report
Attack Trends for Q3 and Q4 2002

Contents

Executive Summary
About the Symantec Internet Security Threat Report 
Table of Contents
Report Highlights 

Cyber Attack Activity
Network-based Cyber Attack Activity
Overview
General Attack Trends
Attack Activity by Company Type
Attacker Profiles
Cyber-Terrorism
Internal Misuse and Abuse

Vulnerability and Malicious Code Trends
Emergence of New Vulnerabilities
Overview
General Trends
Future Concerns
Emergence of Malicious Code
Overview
Current Trends
Future Concerns

Appendix A—Network-Based Cyber Attack Methodology
Overview
Company Demographics
Attack Metrics
Individual Research Inquiries

Appendix B—Malicious Code Methodology 
Infection Database
Malicious Code Database

Appendix C—Vulnerability Methodology 
Overview
Vulnerability Classifications