Two Moscow-linked figures have emerged as the loudest voices on Twitter amplifying news and commentary about Catalonia's secession referendum.

Research independently confirmed by Fairfax Media shows Twitter accounts of WikiLeaks leader Julian Assange as well as former National Security Administrator contractor Edward Snowden now account for nearly a third of all Twitter traffic under the hashtag #Catalonia.

Wikileaks leader Julian Assange has peppered his Twitter followers with messages supporting Catalan independence. Credit:AP

Assange has peppered his followers with more than 80 original tweets supporting the Catalan independence referendum, suggesting "the future of Western civilisation is being revealed" by the renewed push by regional secessionists.

Those tweets have been generously shared.