Vitalik Buterin
Creator of Ethereum, Cofounder of Bitcoin Magazine
bitcoin
Aiman Erbad, Qatar University
With the rapid increase of threats on the Internet, people are continuously seeking privacy and anonymity. Services such as Bitcoin and Tor were introduced to provide anonymity for online transactions and Web browsing. Due to its pseudonymity model, Bitcoin lacks retroactive operational security, which means historical pieces of information could be used to identify a certain user.