1 code implementation • 12 Jul 2021 • Hanyu Shi, Mirela Silva, Daniel Capecci, Luiz Giovanini, Lauren Czech, Juliana Fernandes, Daniela Oliveira
Phishing and disinformation are popular social engineering attacks with attackers invariably applying influence cues in texts to make them more appealing to users.
no code implementations • 7 Jun 2021 • Shlok Gilda, Mirela Silva, Luiz Giovanini, Daniela Oliveira
This paper investigates the use of machine learning models for the classification of unhealthy online conversations containing one or more forms of subtler abuse, such as hostility, sarcasm, and generalization.
no code implementations • 20 May 2021 • Luiz Giovanini, Fabrício Ceschin, Mirela Silva, Aokun Chen, Ramchandra Kulkarni, Sanjay Banda, Madison Lysaght, Heng Qiao, Nikolaos Sapountzis, Ruimin Sun, Brandon Matthews, Dapeng Oliver Wu, André Grégio, Daniela Oliveira
This paper investigates whether computer usage profiles comprised of process-, network-, mouse-, and keystroke-related events are unique and consistent over time in a naturalistic setting, discussing challenges and opportunities of using such profiles in applications of continuous authentication.
no code implementations • 22 Jan 2021 • Mirela Silva, Daniela Oliveira
Brazil is home to over 200M people, the majority of which have access to the Internet.
Computers and Society
no code implementations • 21 Dec 2020 • Mirela Silva, Luiz Giovanini, Juliana Fernandes, Daniela Oliveira, Catia S. Silva
This paper examines 3, 517 Facebook ads created by Russia's Internet Research Agency (IRA) between June 2015 and August 2017 in its active measures disinformation campaign targeting the 2016 U. S. general election.
no code implementations • 3 Dec 2020 • Mirela Silva, Fabrício Ceschin, Prakash Shrestha, Christopher Brant, Shlok Gilda, Juliana Fernandes, Catia S. Silva, André Grégio, Daniela Oliveira, Luiz Giovanini
We found that (i) factual tweets, regardless of whether COVID-related, were more engaging than misinformation tweets; and (ii) features that most heavily correlated with engagement varied depending on the veracity and content of the tweet.