Unit 4: What are the types security attack? _Continued

What are the types security attack? 



Active Attack
Involves an alteration or modification of the data 
The captured data should be modified and altered before it’s Transmission

Types
  1. Replay
Capture of a data unit and retransmitted to produce an unauthorized effect


  2. Masquerade
- Involves some kind of impersonation in the sense, he must capture the message from the sender 
- Study the pattern of sequence of the message
- Get extra privileges as the authorized entity

  3. Modification of message
Some part of captured message is altered or delayed to produce an unauthorized effect


   4. Denial of services
-Degrades the performance of a network
-Target may be specific task