Malicious COVID-19 online content, including racist content, disinformation and misinformation, thrives and spreads online by bypassing the moderation efforts of individual social media platforms. Researchers at the George Washington University show how malicious content exploits pathways between platforms, highlighting the need for social media companies to rethink and adjust their content moderation policies. They found the strongest connections were VKontakte into Telegram (40.83% of cross-platform connections) and Telegram into 4Chan (11.09%)
Source: https://www.helpnetsecurity.com/2021/06/18/malicious-covid-19-online-content/