By Joel Adams For Mailonline
Published: 02:04 GMT, 3 December 2019 | Updated: 08:59 GMT, 3 December 2019
Classified government documents which show US-UK trade preparations were leaked online in a manner almost identical to a known Russian disinformation campaign, experts have concluded.
The documents were unveiled last month by Jeremy Corbyn who said the papers disproved Boris Johnson's claims that the NHS would not be part of any trade talks, - instead revealing the US wanted 'total market access' after the UK leaves the EU.
But yesterday a report from disinformation analysts Graphika showed how the unredacted pages were initially disseminated using methods nearly identical to Secondary Infektion, a known Russian operation.
The experts said the similarity was not proof of Russian origin, concluding: 'They could indicate a return of the actors behind Secondary Infektion or a sophisticated attempt by unknown actors to mimic it.'
Labour leader Jeremy Corbyn holding up a redacted copy of the Department for International Trade's UK-US Trade and Investment Working Group readout
In a 19-page report Graphika said that while it could not conclusively prove a Russian origin to the leak, the early distribution of the cache of files via Reddit, three German-language websites and an anonymous Twitter account reflected a method of operation seen repeatedly over recent years.
There is no suggestion the documents are fake, but the Graphika investigation shows efforts made by unknown actors to publicise the leak in late October.