Introduction 

Why is security a concern on the Internet?

Many of the tools we use to connect to the Internet were originally designed to make it easy and convenient. Security was an afterthought until companies began to lose millions and individuals faced the nightmare of identity theft.

• Who uses the Internet?
• Who threatens network security?

A wide range of security concerns exist:

• Disruption or denial of service attacks
• Defacing web sites
• Unauthorized use of credit cards
• Invasion of privacy—especially related to minors
• Unauthorized changes to database records
• Fraud
• Misuse of data about vulnerable populations
• Spreading viruses
• Employee misuse of the Net
• Employee privacy
• Email harassment

The security vulnerabilities affect both individuals and groups, public and private entities, and both large and small organizations.

Your Personal and Corporate Security Team
When a subject is as complicated as Internet security, it is important to know that you aren't alone facing it. Whether or not you realize it, you already have a team of experts working on making the Internet and especially the World Wide Web a safer place.

Organization	Responsibilities
International Standards Groups	Adopt security standards and update them as needed Make standards information available to all interested parties
Web Hosting Service	Install security patches to operating systems and server software Backup web sites regularly Keep web sites up and running Update related software (ex. middleware) as needed Report security breaches to proper authorities (CERT, FBI, etc.) Warn customers of potential security problems
Internet Service Provider	Install security patches to operating systems and server software Backup email servers regularly Help prevent SPAM Report security breaches to proper authorities (CERT, FBI, etc.) Warn customers of potential security problems
Software Companies	Provide security patches and software updates Warn customers of potential security problems
Web Design Firms	Include security measures when designing the site Install security patches as needed Warn customers of potential security problems
Your Company	Pay attention to security alerts Visit update and support sections of software vendors regularly Install security patches as needed Backup critical systems on a regular schedule Report security breaches to proper authorities (CERT, FBI, etc.)

Others concerned with the security of web-based e-commerce include: government agencies, credit card companies, digital certificate companies, professional associations, consumer advocacy groups, etc. All of the organizations are concerned with providing secure online commerce.