第二版《网络空间与网络安全》英文无水印PDF

Cyberspace

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《网络空间与网络安全（第二版）》是一部由George Kostopoulos编著的英文书籍，由CRC Press出版并隶属于Taylor & Francis Group。本书是该系列的第二版，旨在探讨和分析全球互联网环境下的安全挑战及其管理策略。随着信息技术的飞速发展，网络空间已经成为社会、经济和政治生活不可或缺的一部分，网络安全的重要性也随之凸显。在本书中，作者深入研究了以下几个关键知识点： 1. **网络空间定义**：首先，作者对网络空间的定义进行了详尽阐述，指出它不仅仅是互联网本身，而是包括虚拟与现实世界交互的全维度环境，如物联网(IoT)、云计算和移动通信等。 2. **网络安全威胁**：章节中涵盖了各种网络威胁，如黑客攻击、病毒、恶意软件、网络钓鱼、数据泄露以及身份盗窃等，并分析了它们的类型、原理和影响。 3. **安全框架与政策**：作者讨论了现有的网络安全框架，如NIST (National Institute of Standards and Technology)的框架，以及国际和国家层面的网络安全政策，强调了合规性和法规遵从性。 4. **网络防御技术**：书中介绍了前沿的网络安全技术，如防火墙、入侵检测系统(IDS)、入侵预防系统(IPS)、加密和多因素认证等，以及如何构建有效的网络安全防御体系。 5. **风险管理与策略**：作者提供了如何评估风险、制定风险缓解措施以及实施网络安全策略的实用指南，帮助读者理解和应用最佳实践。 6. **国际合作与标准**：在全球化的背景下，网络空间安全需要各国共同合作，书中涉及了跨国家和地区间的网络安全标准和合作机制，如ISO 27001信息安全管理体系。 7. **未来趋势与发展**：作者预测了网络空间和网络安全领域可能出现的新挑战和机遇，如物联网安全、人工智能在安全中的角色以及新兴技术如区块链可能带来的影响。《网络空间与网络安全（第二版）》不仅是一本理论教材，也是一份实践指导，为政策制定者、企业管理人员、IT专业人员以及普通用户提供了全面理解网络空间安全现状和应对策略的重要参考资源。无论是希望提升个人技能，还是关注网络安全政策发展的读者，这本书都是不可或缺的读物。

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Preface

ere is an expression that is repeatedly heard: every business is a tech-

nology business. Today, we can safely rephrase it to every business is

a cyber business. Indeed, practically every human activity has a cyber

dimension. At work, we are in touch with our professional environ-

ment with our eyes glued to the screen and our hand glued to the

mouse; at home we are similarly reaching friends. On the road, we use

our Web-powered mobile phone to stay in touch, and, tired at home,

we search the Web to view a nice movie and relax.

Besides our physical dimension, we all now have a cyber dimen-

sion. In addition to being citizens of X or Y country, we are also

citizens of cyberspace. ere is no need for a physical passport in

order to travel in, within, and out. Actually, it is needed and we do

have one—it is our IP address—and it imprints itself in hundreds of

places as our requests and replies travel in cyberspace. is is a virtual

“country” with everything one may nd in the physical world, except

cyber police.

e Modern World

e continuous technological developments of the twentieth century

in telecommunications and computing, supported by the advances

in semiconductor chemistry and physics, progressively led to the

xvi Preface

feasibility of inexpensive networks and associated devices. A major

end-product of this century-long, continuous, interdisciplinary, and

intensive technological race has been the Internet, also referred to as

the World Wide Web, WWW, or the Web. e Internet serves as our

global, as well as local, communications infrastructure through which

practically all human interactions pass. Consequently, it has become

the virtual oxygen of the planet, and its failure will lead the planet to

suocation.

Prior to the Internet there were, indeed, global networks, but they

were serving specic sectors—banking, telecommunications, military,

or news services. While the Internet’s technological development has

been rather evolutionary, its impact in the world has been absolutely

revolutionary. It only took the rst decade of the twenty-rst century

for the Internet to wrap the world in its web, from which it is impos-

sible to get out.

Over time, and parallel to the term Web, a new term has entered all

languages. is is cyberspace, which refers to a collection of networks,

activities, and new human attitudes. Beyond this denition, cyberspace

can be described as the habitat of a cybersociety, with a multitude of

sectors that run parallel to those of the traditional society.

Cyberspace has given the world unprecedented power, as well as

unprecedented dependence, and, unfortunately, a loss of privacy.

With the Internet’s ubiquitous presence, many new products and ser-

vices have been created, all absolutely counting on the availability of

the Internet. In today’s world, cyberspace is an integral part of any

enterprise. As a consequence, cybersecurity is an absolute prerequisite.

Cybersecurity must safeguard the following four principles that are

absolutely needed for any trusted cyberspace engagement.

• Condentiality. Data transmitted or stored are private, to be

viewed only by authorized persons.

• Integrity. Data transmitted or stored are authentic—free of

errors made in storage or in transit.

• Availability. Data transmitted or stored are accessible to all

authorized.

• Non-Repudiation. Data transmitted or stored are of indisput-

able authenticity, especially when supported by acceptable dig-

ital certicates, digital signatures, or other explicit identiers.

xviiPreface

Cybersecurity measures must support the above four principles.

Cybersecurity measures are expected to conrm, beyond reasonable

doubt, the identity of users for the purpose of authentication; and to

attest the validity of the authorization parameters presented by a user.

In addition to the above, Cybersecurity measures must also be able

to provide accountability through an electronic audit trail. Such a trail

should be able to attribute each and every activity, taken place in the

information system, to an action initiated by an identiable network

terminal, which will lead to a person.

Today, all communication and computation technologies have

merged, creating a seamless medium where digitized data, text,

sound, images, and video travel at electronic speeds from one end

of the world to the other. Such activities implement functions and

operations that cannot be realized in any other way. Cyberspace has

engulfed all aspects of life, and each and every aspect of life has some

direct or indirect dependence on it. Consequently, the uninterrupted,

unobstructed, and secure availability of cyberspace constitutes a

prerequisite to the ecient performance of practically all sectors of

society.

Purpose and Audience

e purpose of this book is dual. e rst purpose is to oer the

readers an educated awareness of the issues that aect cyberspace and

cybersecurity, as they stand today, and the second one is to provide

the necessary infrastructure on which the readers can build their own

cyberspace and cybersecurity expertise in a lifelong learning mode.

As for the addressed audience, it is again dual. e rst audience is

the non-cybersecurity techies who want to tip-toe into cyberspace and

cybersecurity and get a avor of the wide spectrum of related issues

before they dedicate themselves to cyber defense. e second audience

is non-techies concerned with cyberspace and cybersecurity who want

to get a head start on this very important aspect of modern life.

e Book

Cyberspace and cybersecurity are two wagons of a fast-moving train,

and this book aims to help the reader pick up speed and hop on the

xviii Preface

train. Once on it and with the acquired background, the reader will

be able to follow the technological advances and eventually contrib-

ute to making the train safer. Toward that end, the book has been

arranged into twelve chapters.

Chapter 1. Vulnerabilities in Information Systems. In this chapter quan-

tifying and measuring vulnerability are discussed, along with ways to

avoid it through secure coding. Also, the Security Content Automation

Protocol developed by the National Institute for Standards and

Technology is reviewed, which is extensively used in measuring vulner-

ability in software systems.

Chapter 2. Vulnerabilities in the Organization. Here, organization-

related vulnerabilities are reviewed. ey include access authoriza-

tion and user authentication, as well as human factors in information

security and ways to minimize risk. Also covered are the wireless

networks—Bluetooth, Wi-Fi, and WiMAX—and measures to increase

their security. Cloud computing is examined, along with its advan-

tages and disadvantages.

Chapter 3. Risks in Information Systems Infrastructure. Examined

here are the risks inherent in the various information system compo-

nents, namely, hardware, software, and people, as well as in cyberspace

at large. Also reviewed are available cyberspace insurance programs

and the oered coverage.

Chapter 4. Secure Information Systems. In this chapter the need for

an information security strategy is emphasized, pointing out asset

identication as a cornerstone to such strategy. Also discussed are

communication issues between assets and between users, focusing on

email security. e chapter concludes with coverage of information

security management, identifying and discussing the related issues.

Chapter 5. Cybersecurity and the CIO. Presented in this chapter are

the traits a Chief Information Ocer (CIO) needs to have to success-

fully address the cybersecurity challenges. Included are the person-

ality characteristics, the needed education and experience, and the

responsibilities that come with the position. Also examined is the

changing role of the CIO from a super techie to a corporate strategic

planner.

Chapter 6. Building a Secure Organization. Here, the prime con-

cern is the business aspects of the organization and the continuity

of these businesses should an adverse incident take place. Such an

xixPreface

incident may not necessarily be a hostile intrusion, but possibly an

act of nature. Also reviewed in this chapter is the need for a exible

corporate policy on data security and Internet use, and the compliance

requirements that are posed by the cognizant authorities.

Chapter 7. Cyberspace Intrusions. In cybersecurity, the intrusion

detection and prevention systems (IDPS) comprise the rst line of

protection. Here, the IDPS are discussed, focusing on congurations,

capabilities, selection, management, and deployment. Also covered

are the application-based software versus the appliance-based soft-

ware, which now constitute the trend.

Chapter 8. Cyberspace Defense. is chapter focuses on the defense

of the personal computer while in cyberspace against attacks and mal-

ware. Discussed are defense principles, techniques, and, most impor-

tantly, security tools. e tools reviewed include security analyzers,

rewalls, antivirus software, le shredding, le encryption, and anti-

loggers. Here, the emphasis is that le security is in the hands of

the user, and les can be totally safe if proper defense measures are

applied.

Chapter 9. Cyberspace and the Law. Reviewed here are the vari-

ous international and US federal laws and legal initiatives aiming at

providing a legal infrastructure for what transpires over the Internet.

Covered is the role the United Nations may play in establishing an

international cyber order that will address intellectual property and

cybercrime issues. Numerous US data and information-related laws

are being reviewed, with ten prominent ones elaborated on.

Chapter 10. Cyber Warfare and Homeland Security. is chapter

has three parts. e rst is on cyber warfare, where cyber terrorism

and cyber espionage are discussed, along with the hope of a possible

cyber weapons treaty, a treaty that will curtail sovereign states from

open cyber hostilities. e second part is on the US Department

of Homeland Security and its role in the country’s cyber prepared-

ness. e third part views the Internet as a cyber ecosystem where its

defense has to be in a worldwide distributed fashion. Also covered in

this chapter is cyber training and its components.

Chapter 11. Digital Currencies. is chapter elaborates on the new

concepts of cyber crypto currencies and their association to cyber-

crime. us, introducing the reader to the fast developing cyber cur-

rencies and their worldwide applications.

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