Alienvault - https://www.alienvault.com/open-threat-exchange/dashboard#/threats/top
HoneyPot - http://www.projecthoneypot.org/home.php
HaveIbeenPwnd https://haveibeenpwned.com/
Data Breaches http://www.databreaches.net/
Intel/McAfee
Cisco IPS
Cisco Threat