Facebook said Tuesday it had shut down more than 30 fake pages and accounts involved in what appeared to be a "coordinated" attempt to sway public opinion on political issues ahead of November midterm elections, but cannot identify the source.
It said the "bad actor" accounts on the world's biggest social network and its photo-sharing site Instagram could not be tied to Russian actors, who US officials say used the platform to spread disinformation ahead of the 2016 presidential election in the United States.
But the tech giant did say "some of the activity is consistent" with that of the Saint Petersburg-based Internet Research Agency (IRA) - the Russian troll farm that managed many false Facebook accounts used to influence the 2016 vote. "We're shutting down 32 pages and accounts engaged in coordinated inauthentic behavior without saying that a specific group or country is responsible," Facebook said in a series of blog posts.
"We're still in the very early stages of our investigation and don't have all the facts - including who may be behind this," it added. "But we are sharing what we know today given the connection between these bad actors and protests that are planned in Washington next week."
Facebook said it had briefed US law enforcement agencies, Congress and other tech companies about its findings. The New York Times reported that the company was working with the Federal Bureau of Investigation on the investigation. The company said those behind the campaign had been "more careful to cover their tracks, adding: "We've found evidence of some connections between these accounts and IRA accounts we disabled last year (...) but there are differences too."
Some of the most-followed pages that were shut down included "Resisters" and "Aztlan Warriors." The "Resisters" page enlisted support from real followers for an August protest in Washington against the far-right "Unite the Right" group.
The Times, citing unnamed sources, reported that other "coordinated" activity revolved around AbolishICE, a left-wing campaign against the Immigration and Customs Enforcement agency. The news comes just days after Facebook suffered the worst single-day evaporation of market value for any company, after missing revenue forecasts for the second quarter and offering soft growth projections.
Mark Zuckerberg's firm says the slowdown will come in part due to its new approach to privacy and security - one which helped experts uncover these so-called "bad actors."
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