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Social media bots becoming more human and difficult to detect, study shows

10 Sep
10Sep


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A team led by computer scientist Emilio Ferrara examined bot behaviour during the US 2018 elections compared to bot behaviour during the US 2016 elections.

They studied approximately 250,000 active users of social media who discussed the US elections both in 2016 and 2018 and detected over 30,000 bots.

They found that bots in 2016 were primarily focused on retweets and high volumes of tweets around the same message. However, as human social activity online has evolved, so have bots.

In the 2018 election season, just as humans were less likely to retweet as much as they did in 2016, bots were less likely to share the same messages in high volume.

They were also more likely to employ a multi-bot approach as if to mimic authentic human engagement around an idea.


Also, during the 2018 elections, as humans were much more likely to try to engage through replies, bots tried to establish voice and add to dialogue and engage through the use of polls, a strategy typical of reputable news agencies and pollsters, possibly designed to legitimise these accounts.

In one example, a bot account posted an online Twitter poll asking if federal elections should require voters to show ID at the polls. It then asked Twitter users to vote and retweet.

Lead author Emilio Ferrara said: “Our study further corroborates this idea that there is an arms race between bots and detection algorithms. As social media companies put more efforts to mitigate abuse and stifle automated accounts, bots evolve to mimic human strategies.

“Advancements in AI enable bots producing more human-like content. We need to devote more efforts to understand how bots evolve and how more sophisticated ones can be detected. With the upcoming 2020 US elections, the integrity of social media discourse is of paramount importance to allow a democratic process free of external influences.”

A study from 2017 found that the actions of bots can actually lead to the shaping of news agendasand government policy while another from the same year showed that real Twitter uses with more than 10 million followers tended to behave in a similar manner to bots.

© 2019 The Institution of Engineering and Technology. The Institution of Engineering and Technology is registered as a Charity in England & Wales (no 211014) and Scotland (no SC038698)
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