Threats Sybil Attack Poses To Blockchain Technology Training Ppt

Slide 1

This slide illustrates the concept of sybil attack on blockchain network. It explains that in Sybil attack, one individual takes control over the blockchain network by creating multiple fake nodes (sybil nodes). It highlights the multiple types of sybil attacks such as: the direct sybil attack and indirect sybil attack. In direct attack, the honest node gets influenced by the sybil node and in the indirect attack hackers manipulate a middle node, which is in communication with an honest node to achieve his/her own ends.

Slide 2

This slide showcases the multiple impacts of sybil attack on blockchain network. The multiple impacts of sybil attack such as creation of fake identities, blocking users, performing reverse transaction, and security and privacy risk. It explains that the hacker in the network after conducting the attack can vote out any request from an honest user. The attacker can conduct a large-scale attack and manipulate the entire blockchain network by purchase transactions or reversing some of these are per his/her own motive. It can also put user security at risk by controlling the information about their IP address.

Slide 3

This slide showcases the multiple ways by which blockchain networks can be prevented from Sybil attacks. The different prevention measures are: use different consensus algorithms, set up cost to create new identity, and validation of identity before anyone joins the network.