Elements of Computer Security (Undergraduate Topics in Computer Science)

Elements of Computer Security (Undergraduate Topics in Computer Science)

Language: English

Pages: 375

ISBN: 0857290053

Format: PDF / Kindle (mobi) / ePub


As our society grows ever more reliant on computers, so it also becomes more vulnerable to computer crime. Cyber attacks have been plaguing computer users since the 1980s, and computer security experts are predicting that smart telephones and other mobile devices will also become the targets of cyber security threats in the future.

Developed from the author's successful Springer guide to Foundations of Computer Security, this accessible textbook/reference is fully updated and enhanced with resources for students and tutors.

Topics and features: examines the physical security of computer hardware, networks, and digital data; introduces the different forms of rogue software (or malware), discusses methods for preventing and defending against malware, and describes a selection of viruses, worms and Trojans in detail; investigates the important threats to network security, and explores the subjects of authentication, spyware, and identity theft; discusses issues of privacy and trust in the online world, including children's privacy and safety; includes appendices which discuss the definition, meaning, and history of the term hacker, introduce the language of "l33t Speak", and provide a detailed virus timeline; provides numerous exercises and examples throughout the text, in addition to a Glossary of terms used in the book; supplies additional resources at the associated website, http://www.DavidSalomon.name/, including an introduction to cryptography, and answers to the exercises.

Clearly and engagingly written, this concise textbook is an ideal resource for undergraduate classes on computer security. The book is mostly non-mathematical, and is suitable for anyone familiar with the basic concepts of computers and computations.

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advertised and sold online, and are legal. Law 4: If you allow someone to upload programs to your Web site, it’s not your Web site any more. We already know that it is dangerous to let someone upload a program to your computer, but in most of these cases, the program is uploaded to a Web site and the uploader is permitted by the site’s owner to run it. Long Introduction 9 experience shows that Web site owners often allow visitors, out of the goodness of their heart or out of carelessness, to

the computer. This virus spends its life switching between two modes, mutate and replace. It starts in the mutate mode, where it spreads m mutations of itself by using its m encryption methods as shown earlier. This infects m files with different copies of the virus, all with the same infection, triggering, and payload mechanisms, but all looking different. When done, the virus switches to the replace mode, where it selects different infection, trigger, and damage mechanisms. It then switches to its

ABC, Vuze, BitAnarch, BitComet, BitSpirit, BitTornado, BitTorrent, BitTorrent++, BitTorrent.Net, G3 Torrent, mlMac, MLDonkey, QTorrent, SimpleBT, Shareaza, TorrentStorm, Bits on Wheels, and TomatoTorrent. 3.2 Worming Techniques 111 An attacker wanting to spread a worm to all the nodes of a peer-topeer network needs to find only one vulnerability in the protocol or in the programs used by the nodes. In addition, the use of a peer-to-peer network for worm propagation has the following

daemon, thereby altering it for the purpose of the worm. UNIX also offers a sendmail utility for sending mail. This program has several modes, one of which operates as a background process (daemon) where sendmail continuously checks a certain port for incoming SMTP email. When such email is sensed, the daemon performs the handshaking SMTP protocol in order to receive the email message and identify its recipient. The sendmail security weakness exploited by the virus had to do with debugging.

application and serves as handy identification. Sometimes, the operating system hides the extension in the assumption that users know their files and prefer to deal with short names, but as a security measure, users should ask to see these extensions. A conflict between a file’s extension and its icon can serve as a red flag to raise suspicion, as are files with two extensions or with many spaces preceding the extension. Another important preventive measure is to have regular backups of all

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