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Cashtag piggybacking: uncovering spam and bot activity in stock microblogs on Twitter [article]

Stefano Cresci, Fabrizio Lillo, Daniele Regoli, Serena Tardelli, Maurizio Tesconi
2018 arXiv   pre-print
More importantly, we uncover a malicious practice - referred to as cashtag piggybacking - perpetrated by coordinated groups of bots and likely aimed at promoting low-value stocks by exploiting the popularity  ...  Our results call for the adoption of spam and bot detection techniques in all studies and applications that exploit user-generated content for predicting the stock market.  ...  Cashtag piggybacking Results of our study uncover a large presence of bot accounts in stock microblogs on Twi er.  ... 
arXiv:1804.04406v2 fatcat:d4erx3svnrfkjpqt4tqlfdjeq4

Identifying and Analyzing Cryptocurrency Manipulations in Social Media [article]

Mehrnoosh Mirtaheri, Sami Abu-El-Haija, Fred Morstatter, Greg Ver Steeg, Aram Galstyan
2019 arXiv   pre-print
Finally, we analyze the prevalence of bots in cryptocurrency related tweets, and observe a significant increase in bot activity during the pump attempts.  ...  Because of the speed and relative anonymity offered by social platforms such as Twitter and Telegram, social media has become a preferred platform for scammers who wish to spread false hype about the cryptocurrency  ...  We would also like to thank Emilio Ferrara and Pegah Jandaghi for their helpful comments.  ... 
arXiv:1902.03110v2 fatcat:xz6oufmcujcjxnvmbknjjri3dm