<https://www.cyberthreatalliance.org/#website>
<http://schema.org/description>
"The Cyber Threat Alliance (CTA) is a group of cybersecurity practitioners from organizations that have chosen to work together in good faith to share threat information for the purpose of improving defenses against advanced cyber adversaries across member organizations and their customers."
<https://cyberthreatalliance.org/tag/guest-blog/>