|PDF Title :||Cryptography and Network Security: principles and practice|
|Edition:||5th Book Edition|
|PDF Content:||23 Chapters|
|Total Page :||900 Pages|
|PDF Size :||6.5 MB|
|PDF Link :||Available|
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Cryptography and Network Security: principles and practice – Book
A significant security problem for networked systems is hostile, or at least unwanted, trespass by users or software. User trespass can take the form of unauthorized logon to a machine or, in the case of an authorized user, acquisition of privileges or performance of actions beyond those that have been authorized. Software trespass can take the form of a virus, worm, or Trojan horse.
All these attacks relate to network security because system entry can be achieved by means of a network. However, these attacks are not confined to network-based attacks. A user with access to a local terminal may attempt trespass without using an intermediate network. A virus or a Trojan horse may be introduced into a system by means of an optical disc. Only the worm is a unique network phenomenon. Thus, system trespass is an area in which the concerns of network security and computer security overlap.
Because the focus of this book is network security, we do not attempt a comprehensive analysis of either the attacks or the security countermeasures related to system trespass. Instead, in this Part, we present a broad overview of these concerns.
Cryptography and Network Security: principles and practice PDF
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