Having wikis enabled and publicly editable can be a security concern, people can use the trusted nature of your GitHub organization to convince people to click nefarious links or run bad commands in their terminal. As GitHub doesn't provide a One Click solution to turning off wikis at an org level, this script will do that for you.
npx disable-wikisThen follow the onscreen prompts, it will ask for a GitHub Personal Access Token with certain scopes and then ask you to choose an organization. It will then roll through and disable wikis all all the repositories in that org. Please note that this doesn't delete any wiki content, re-enabling wikis later will recover any content if you want it.