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Massive networks of fake accounts found on Twitter

25.01.2017, 12:09

UK researchers accidentally uncovered the lurking networks while probing Twitter to see how people use it.

The largest network ties together more than 350,000 accounts and further work suggests others may be even bigger. Some of the accounts have been used to fake follower numbers, send spam and boost interest in trending topics.

On Twitter, bots are accounts that are run remotely by someone who automates the messages they send and activities they carry out. Some people pay to get bots to follow their account or to dilute chatter about controversial subjects.

"It is difficult to assess exactly how many Twitter users are bots," said graduate student Juan Echeverria, a computer scientist at UCL, who uncovered the massive networks.

Echeverria's research began by combing through a sample of 1% of Twitter users in order to get a better understanding of how people use the social network.

However, analysis of the data revealed some strange results that, when probed further, seemed to reveal lots of linked accounts, suggesting one person or group is running the botnet. These accounts did not act like the bots other researchers had found but were clearly not being run by humans.

His research suggests earlier work to find bots has missed these types of networks because they act differently to the most obvious automated accounts. The network of 350,000 bots stood out because all the accounts in it shared several subtle characteristics that revealed they were linked. These included: tweets coming from places where nobody lives, messages being posted only from Windows phones, almost exclusively including quotes from Star Wars novels.

It was hard to know who was behind the collections of fake accounts, said Dr Zhou, a senior lecturer from UCL who oversaw Mr Echeverria's research, although there was evidence that a small percentage of the accounts had been sold or rented as they were now following Twitter users outside the main bot network.

A Twitter spokesman said the social network had clear policy on automation that was "strictly enforced".

Users were barred from writing programs that automatically followed or unfollowed accounts or which "favourited" tweets in bulk, he said. "While we have systems and tools to detect spam on Twitter, we also rely on our users to report spamming," he said.


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