{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,22]],"date-time":"2025-10-22T20:35:06Z","timestamp":1761165306053,"version":"build-2065373602"},"reference-count":13,"publisher":"Sociedade Brasileira de Computa\u00e7\u00e3o - SBC","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>Este trabalho apresenta uma an\u00e1lise explorat\u00f3ria da atividade de grupos de WhatsApp associados \u00e0 extrema direita brasileira, em dois momentos distintos, mais precisamente os per\u00edodos pr\u00e9 (16\/08\/2022 a 30\/10\/2022) e p\u00f3s-eleitoral (01\/11\/2022 a 15\/02\/2023). A partir da coleta de mensagens compartilhadas em 301 grupos p\u00fablicos distintos, cada per\u00edodo investigado foi representado por uma rede complexa. As an\u00e1lises dessas redes contemplaram medidas de centralidade, decomposi\u00e7\u00e3o n\u00facleo-periferia e detec\u00e7\u00e3o de comunidades. Adicionalmente, t\u00e9cnicas de an\u00e1lise de polaridade e visualiza\u00e7\u00f5es espaciais foram utilizadas para complementar o estudo dos grupos investigados. Os resultados apontaram que o n\u00famero de grupos em rede aumentou de 154 para 192 no per\u00edodo p\u00f3s-eleitoral. O n\u00famero de comunidades tamb\u00e9m aumentou, por\u00e9m a modularidade caiu de 0,537 para 0,292, indicando um aumento na interconex\u00e3o dos grupos. A quantidade de grupos no n\u00facleo da rede passou de 23 para 39 (+69,6%). Foram identificadas 9 migra\u00e7\u00f5es da periferia para o n\u00facleo e 5 no sentido inverso. Os grupos de maior centralidade n\u00e3o se mantiveram os mesmos nos dois per\u00edodos estudados. Por fim, as mensagens compartilhadas tiveram um leve incremento na polaridade.<\/jats:p>","DOI":"10.5753\/sbbd.2025.247285","type":"proceedings-article","created":{"date-parts":[[2025,10,21]],"date-time":"2025-10-21T19:26:36Z","timestamp":1761074796000},"page":"563-575","source":"Crossref","is-referenced-by-count":0,"title":["Din\u00e2micas de Grupos de WhatsApp da Extrema Direita no Brasil: Uma An\u00e1lise Comparativa Pr\u00e9 e P\u00f3s-Elei\u00e7\u00e3o de 2022"],"prefix":"10.5753","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9824-2152","authenticated-orcid":false,"given":"Fernanda Ferreira do","family":"Nascimento","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9 M.","family":"Monteiro","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Javam","family":"Machado","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"3742","published-online":{"date-parts":[[2025,9,29]]},"reference":[{"key":"1","unstructured":"Barbosa, B., Martins, H., and Valente, J. (2020). Fake news: como as plataformas enfrentam a desinforma\u00e7\u00e3o. Technical report, Intervozes."},{"key":"2","unstructured":"Bovet, A. and Grindrod, P. (2020). The activity of the far right on telegram. EPJ Data Science, 9(1):2."},{"key":"3","doi-asserted-by":"crossref","unstructured":"Bovet, A. and Grindrod, P. (2022). Organization and evolution of the uk far-right network on telegram. Applied Network Science, 7(1):76.","DOI":"10.1007\/s41109-022-00513-8"},{"key":"4","doi-asserted-by":"crossref","unstructured":"de S\u00e1, I. C., Galic, L., Franco, W., Gadelha, T., Monteiro, J. M., and Machado, J. C. (2023). BATMAN: A big data platform for misinformation monitoring. In Filipe, J., Smialek, M., Brodsky, A., and Hammoudi, S., editors, Proceedings of the 25th International Conference on Enterprise Information Systems, ICEIS 2023, Volume 1, Prague, Czech Republic, April 24-26, 2023, pages 237\u2013246. 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In 2024 2nd International Conference on Computer, Communication and Control (IC4), pages 1\u20134.","DOI":"10.1109\/IC457434.2024.10486364"},{"key":"8","doi-asserted-by":"crossref","unstructured":"Kansaon, D., Melo, P. d. F., Zannettou, S., Feldmann, A., and Benevenuto, F. (2024). Strategies and attacks of digital militias in whatsapp political groups. Proceedings of the International AAAI Conference on Web and Social Media, 18(1):813\u2013825.","DOI":"10.1609\/icwsm.v18i1.31354"},{"key":"9","doi-asserted-by":"crossref","unstructured":"L\u00f6wy, M. (2015). Conservadorismo e extrema-direita na europa e no brasil. Servi\u00e7o Social & Sociedade, pages 652\u2013664.","DOI":"10.1590\/0101-6628.044"},{"key":"10","doi-asserted-by":"crossref","unstructured":"Martins do R\u00eago Barreto, H. (2024). A desinforma\u00e7\u00e3o em meio \u00e0 crise do capitalismo e \u00e0 configura\u00e7\u00e3o de uma nova estrutura de media\u00e7\u00e3o social. 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