For many Americans, Russian hacking remains a story about the 2016 election. But there is another story taking shape. Marrying a hundred years of expertise in influence operations to the new world of social media, Russia may finally have gained the ability it long sought but never fully achieved in the Cold War: to alter the course of events in the U.S. by manipulating public opinion. The vast openness and anonymity of social media has cleared a dangerous new route for antidemocratic forces. “Using these technologies, it is possible to undermine democratic government, and it’s becoming easier every day,” says Rand Waltzman of the Rand Corp., who ran a major Pentagon research program to understand the propaganda threats posed by social media technology.

If that sounds alarming, it helps to understand the battlescape of this new information war. As they tweet and like and upvote their way through social media, Americans generate a vast trove of data on what they think and how they respond to ideas and arguments–literally thousands of expressions of belief every second on Twitter, Facebook, Reddit and Google. All of those digitized convictions are collected and stored, and much of that data is available commercially to anyone with sufficient computing power to take advantage of it.
That’s where the algorithms come in. American researchers have found they can use mathematical formulas to segment huge populations into thousands of subgroups according to defining characteristics like religion and political beliefs or taste in TV shows and music. Other algorithms can determine those groups’ hot-button issues and identify “followers” among them, pinpointing those most susceptible to suggestion. Propagandists can then manually craft messages to influence them, deploying covert provocateurs, either humans or automated computer programs known as bots, in hopes of altering their behavior.
That is what Moscow is doing, more than a dozen senior intelligence officials and others investigating Russia’s influence operations tell TIME.
In May 2016, a Russian military intelligence officer bragged to a colleague that his organization, known as the GRU, was getting ready to pay Clinton back for what President Vladimir Putin believed was an influence operation she had run against him five years earlier as Secretary of State. The GRU, he said, was going to cause chaos in the upcoming U.S. election. Like much of America, many in the U.S. government hadn’t imagined the kind of influence operation that Russia was preparing to unleash on the 2016 election. Fewer still realized it had been five years in the making.
These officials have seen evidence of Russia using its algorithmic techniques to target the social media accounts of particular reporters, senior intelligence officials tell TIME. “It’s not necessarily the journal or the newspaper or the TV show,” says the senior intelligence official. “It’s the specific reporter that they find who might be a little bit slanted toward believing things, and they’ll hit him” with a flood of fake news stories.
By raising doubts about the validity of the 2016 vote and the vulnerability of future elections, Russia has achieved its most important objective: undermining the credibility of American democracy.
For now, investigators have added the names of specific trolls and botnets to their wall charts in the offices of intelligence and law-enforcement agencies. They say the best way to compete with the Russian model is by having a better message. “It requires critical thinkers and people who have a more powerful vision” than the cynical Russian view, says former NSA deputy Inglis. And what message is powerful enough to take on the firehose of falsehoods that Russia is deploying in targeted, effective ways across a range of new media? One good place to start: telling the truth.