Barracuda Reputation and Intent Analysis

While the standalone value of reputation data is diminishing, it remains an important baseline for sender profiling. For reputation analysis, the Barracuda Spam Firewall leverages data on both the network addresses used to send email as well as the domain names embedded in the Web links of emails gathered by Barracuda Central, an advanced technology operations center where engineers continually monitor the Internet for trends in spam and virus attacks. Combining both the IP and reputation data enables Barracuda Networks to implement countermeasures to mitigate all spam and virus threats.

Barracuda Central maintains historical data on IP addresses used in both spam attacks and legitimate email campaigns. Through Barracuda Reputation analysis, the Barracuda Spam Firewall can make quick and computationally efficient decisions to block or accept email based on a simple lookup of the sender’s IP address against either the Barracuda Blacklist (“block list”) or the Barracuda Whitelist (“allow list”). Other network addresses in the “grey area” are left for further analysis through nine subsequent spam and virus defense layers.

In addition, Barracuda Central maintains reputation on spam domains, phishing domains, and Web sites known to host malware. When these domain names are embedded in email message bodies, the Intent Analysis layer of the Barracuda Spam Firewall can quickly block email based on a simple database lookup.

This combination of IP and reputation data provides the most complete reputation analysis in the industry. Updates to the Barracuda Reputation and Intent Analysis databases are delivered automatically to the Barracuda Spam Firewall via Barracuda Energize Updates.