"Browsers trust a very large number of these CAs, and unfortunately, the security of HTTPS is only as strong as the practices of the least trustworthy/competent CA. Before publishing this data, we attempted to notify administrators of all sites observed vulnerable to the Debian weak key bug; please let us know if your analysis reveals other classes of vulnerabilities so that we can notify affected parties."
Comments
https://www.eff.org/observatory
"Browsers trust a very large number of these CAs, and unfortunately, the security of HTTPS is only as strong as the practices of the least trustworthy/competent CA. Before publishing this data, we attempted to notify administrators of all sites observed vulnerable to the Debian weak key bug; please let us know if your analysis reveals other classes of vulnerabilities so that we can notify affected parties."