What is Talos Intelligence?

Talos Intelligence is Cisco's threat intelligence organization, providing security research and reputation data. Their email reputation system feeds Cisco email security products and is available for third-party query.

Talos maintains sender reputation scores based on: sending patterns, spam reports, malware association, and network behavior. Reputation ranges from Good through Neutral to Poor, with Poor scores triggering blocking in Cisco-protected environments.

Cisco email security is common in enterprises, so Talos reputation affects B2B delivery significantly. Their reputation center provides lookup tools and reputation status. Unlike traditional blocklists, Talos uses graduated scores rather than binary listings.