All Barracuda Networks products, all firmware versions.
Barracuda, in fact, leads in its investment in R&D (research and development). Barracuda has announced a number of firsts, including being the first major security appliance vendor to tackle the image spam problem with an integrated optical character recognition engine, the first to announce PDF spam protection, and the first to implement Predictive Sender Profiling techniques such as multi-level intent analysis to combat the latest forms of spam.
It is true that Barracuda leverages open source technologies. We have been quite transparent in both our use and support of the open source community. (See http://www.barracudanetworks.com/ns/company/open-source.php). In fact, open source technologies have been heralded in security applications because of the scrutiny and ongoing contributions from security researchers worldwide. Barracuda utilizes open source technologies for commodity functions in its appliances, including the Linux operating system, SpamAssassin, and ClamAV.
Use of open source enables its R&D teams to focus on technologies that add customer value beyond the commodity functions. For example, Barracuda offers the most comprehensive antispam protection with 12 layers of defense. It is true that SpamAssassin is used in the twelfth layer. That said, the rules used in this layer are proprietary to Barracuda Central and provide industry leading antispam protection. As another example, it is true that the Barracuda Spam & Virus Firewall utilizes ClamAV as the first in three layers of antivirus protection. In addition, Barracuda utilizes two additional proprietary layers, including Barracuda Real-Time Protection that directly leverages the installed base of 50,000 customer systems spanning small-medium business, enterprise, government, education, and ISPs across over 80 countries to detect and block new threats as they emerge.
Barracuda has remained the market leader not because of the money it spends on advertising. In fact, the opposite is true. Advertising works for Barracuda because the products actually work.
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