“…Finally, ED has been extensively studied in the literature (Liao and Grishman, 2010;Li et al, 2013;Grishman, 2015, 2016e;Chen et al, 2015;Nguyen et al, 2016g;Lu and Nguyen, 2018;Liu et al, 2016bLiu et al, , 2017Hong et al, 2018;Lai et al, 2020b), partly due to the availability of the large evaluation datasets (i.e., the ACE and TAC KBP datasets (Walker et al, 2006;Mitamura et al, 2015) for the general domains, and the BioNLP datasets (Kim et al, 2009) for the biomedical domain). The closest works to our in the cybersecurity domain involve (Qiu et al, 2016) to extract events on Chinese news, (Khandpur et al, 2017) to perform cyberattack detection on Twitter, and (Satyapanich et al, 2019;Satyapanich et al, 2020) to present the CASIE dataset for event extraction. However, these datasets contain less event types and cannot support the document-level information for the models as CySecED.…”