Understanding Network Security Attacks: Types, Cryptanalysis & Defense 🌐

Active Attack in network security | Types of security attack in cryptography | What is cryptanalysis | Masquerade in network security | Replay attack in network security | Modification message in network security | Denial of Services in network Security | Cryptanalysis in network security | What is security attack in cryptography

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A cryptographic attack is a method for circumventing the security of a cryptographic system by finding a weakness in a code, cipher, cryptographic protocol or key management scheme. This process is also called "cryptanalysis".

There are main two types of security attack in cryptography: Passive Attack and Active Attack. In this video, I have explained Active attack in network security. There are four types of active attack: Masquerade, Replay Attack, Modification of message, Denial of Services.

Masquerade: A masquerade take place when an attacker pretends to be an authentic user. Authentication sequence can be captured & replayed after a valid authentication sequence has taken place. It generally done to gain access to a system, or steal information from system.

Replay Attack: Replay involves the passive capture of data unit and its subsequent retransmission to produce an unauthorized effect. A replay attack is also known as playback attack where attacker repeatedly keeps on transmitting valid data again and again to make the network jam or delayed the transmission of data.

Modification of message: Some portion message is altered, or that message is delayed or recorded to produce unauthorized effect. When content of message modified after sender sends it but before it reaches to concerned receiver, such type of attack is called modification of message.

Denial of Services: Denial of service attack means making the network unavailable for the user those who want to communicate securely. Flood the entire network or server with traffic until shutdown occurs because if overload. This attack may have a specific target. Other form of this attack is disturbing an entire network, either by disabling the network or by overloading with messages so as to degrade performance.

0:00 Introduction
0:08 Types of security attack in network security
0:17 Types of active attack in network security
0:33 Masquerade
1:39 Replay Attack
3:17 Modification of Message
4:42 Denial of Services

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