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Note for Cryptography And Network Security - CNS by VijayaKumar Thangavel

  • Cryptography And Network Security - CNS
  • Note
  • Information Technology Engineering
  • B.Tech
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CS6701-Cryptography & Network Security INTRODUCTION

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INTRODUCTION How to protect the valuable assets?  What is the need of security?    Use of networks and communications links requires measures to protect data during transmission. Types of security? Data security  Computer security  Network security  Internet security 

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DATA SECURITY Data security refers to protective digital privacy measures that are applied to prevent unauthorized access to computers, databases and websites. Data security also protects data from corruption. Data security is an essential aspect of IT for organizations of every size and type.  Data security is also known as information security (IS) or computer security. 

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COMPUTER SECURITY Computer security is the process of preventing and detecting unauthorized use of your computer. Prevention measures help you stop unauthorized users (hackers) from accessing any part of your computer system.  Often they want to gain control of your computer so they can use it to launch attacks on other computer systems. 

Lecture Notes