In theory, Facebook’s announcement on Tuesday that it had discovered and shut down a wide-ranging Iranian misinformation campaign should make you feel better.
The social network was slow to recognize such campaigns as threats before the 2016 presidential election, and it surely deserves some credit for what Mark Zuckerberg, its chief executive, described as the company’s shift from “reactive to proactive detection” of coordinated propaganda operations.
But it was not just Iran, and not just Facebook.
https://www.nytimes.com/2018/08/22/technology/facebook-internet-misinformation.html