How Many Threat Intelligence (TI) Feeds Are Enough?

MSSPs aside (as they can more easily achieve economies of scale), how many TI feeds should an internal SOC leverage?

Well, that depends on the quality of information.  With that said, several open source & commercial / subscription feeds would not hurt for cross-reference purposes.

Here are some feeds worthy of consideration:

• US-CERT
• CTIN
• Optiv
• Facebook ThreatExchange
• Crowstrike
• AlienVault
• SSLBL
• ZeuS Tracker
• Palevo Tracker
• Malc0de
• Binary Defense Systems
• Carbon Black / Bit9
• ThreatQuotient
• Anomali / ThreatStream
• ThreatConnect