A simple script to enable GitHub's Data Services & Vulnerability Scanning on a given Organization's Repositories

enable_alerting.py

from github import Github

gh = Github('SET_GITHUB_ACCESS_TOKE_HERE')

org = gh.get_organization('SET_ORG_NAME_HERE')

repos = org.get_repos()

for repo in repos:
    if repo.archived:
        continue
    if not repo.get_vulnerability_alert():
        repo.enable_vulnerability_alert()
        print(repo)

Superseded by a built-in feature 🎉
https://docs.github.com/en/github/setting-up-and-managing-organizations-and-teams/managing-security-and-analysis-settings-for-your-organization