The key challenge for digital currencies is to prevent spending of the same digital asset also known as a double spend. This article explains what is the double spend attack and how to prevent it.

An Eclipse Attack is a means of attacking a decentralized network through which an attacker seeks to isolate and attack a specific user(s), rather than attack the whole network

Decentralized networks are susceptible to a wide range of attacks by malicious actors. One such attack is known as the ‘Sybil attack’ where a malicious actor takes over a majority of nodes on the netw