This brief sets out practical considerations relating to flows of information, misinformation and disinformation though online media, particularly social media networks, in the context of the COVID-19 pandemic. It details various types of online media, key players and influencers on social media, and strategies for ensuring good information and disrupting mis- and disinformation. It is important to analyse different types of information across different channels, how it is spread and to whom, in order to determine how social media can be harnessed in both positive and negative ways.