People familiar with the matter told WSJ that Facebook could not substantiate claims that supporters of President Trump or Russian actors were involved in producing inauthentic activity, however.
Some of the people who spoke with WSJ said that although some of Facebook’s leadership were briefed on the investigation, it is unclear whether the probe is ongoing.
WSJ’s Monday report comes on the heels of Friday reports that U.S. officials briefed Sanders on attempts by Russia to boost his presidential campaign.
Facebook spokesperson Andy Stone told WSJ that the company launched its investigation into suspicious pro-Sanders content after an outside researcher’s claim. People familiar with the matter noted to WSJ that not all internal inquiries are flagged to senior officials like this one was.
“We investigate each credible claim we receive, just as we did in this instance when an outside researcher contacted us,” Stone told WSJ. “To date, we have not been able to substantiate the researcher’s claims and we have not been notified by the intelligence community.”
A person familiar with the matter told WSJ that within the past several months, two separate and independent online disinformation researchers have found what they determined to be proof of inauthentic pro-Sanders Facebook activity possibly linked to Russian operatives or Trump supporters. People familiar with the review added that at least one of those data sets was shared with Facebook, according to WSJ.
Stone also told WSJ that “had we found a campaign of coordinated inauthentic behavior, we would’ve removed it and announced it publicly, just as we did more than 50 times last year.”
When asked by TPM for a statement regarding Facebook’s inquiry, Sanders’ campaign declined to comment.
TPM also reached out to Facebook for comment. We will update this post if we hear back.
Read the Wall Street Journal’s report here.