accounts

What do a cybersecurity researcher building a system to generate alerts for detecting security threats and vulnerabilities, a wildfire watcher who tracks the spread of forest fires, and public health professionals trying to predict enrollment in health insurance exchanges have in common? They all rely on analyzing data from Twitter. Twitter is a microblogging service, meaning it’s designed for sharing posts of short segments of text and embedded audio and video clips. The ease with which people can share information among millions of others worldwide on Twitter has made it very popular for real-time conversations. Whether it is people tweeting about their favorite sports teams, or organizations and public figures using Twitter to reach a mass audience, Twitter has been part of the collec...

Social media platforms like Facebook, Twitter and Instagram started out as a way to connect with friends, family and people of interest. But anyone on social media these days knows it’s increasingly a divisive landscape. Undoubtedly you’ve heard reports that hackers and even foreign governments are using social media to manipulate and attack you. You may wonder how that is possible. As a professor of computer science who researches social media and security, I can explain – and offer some ideas for what you can do about it. Bots and sock puppets Social media platforms don’t simply feed you the posts from the accounts you follow. They use algorithms to curate what you see based in part on “likes” or “votes.” A post is shown to some users, and the more those people react – positively or neg...