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https://pdos.csail.mit.edu/papers/whanau-nsdi10.pdf
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Petar Maymounkov, one of the original authors of [[Kademlia]], has proposed a way to circumvent the weakness to the Sybil attack by incorporating social trust relationships into the system design.<ref>{{cite journal |author=Chris Lesniewski-Laas |title=A Sybil-proof one-hop DHT |pages=20 |url=http://pdos.csail.mit.edu/papers/sybil-dht-socialnets08.pdf }}</ref> The new system, codenamed Tonika or also known by its ___domain name as 5ttt, is based on an algorithm design known as "electric routing" and co-authored with the mathematician Jonathan Kelner.<ref>{{cite journal |author=Jonathan Kelner, Petar Maymounkov |title=Electric routing and concurrent flow cutting |url=https://archive.org/details/arxiv-0909.2859 |arxiv=0909.2859|bibcode=2009arXiv0909.2859K|year=2009 }}</ref> Maymounkov has now undertaken a comprehensive implementation effort of this new system. However, research into effective defences against Sybil attacks is generally considered an open question, and wide variety of potential defences are proposed every year in top security research conferences.{{Citation needed|date=May 2020}}
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