Larry Zeltser’s blog shares a comprehensive list and overview of cloud based AV products:

Anti-Virus Cloud based Products
http://blog.zeltser.com/post/9050002966/antivirus-vendors-cloud-capabilities

QUOTE: I spent some time exploring publicly-available information about common antivirus products to understand how the vendors describe and position their cloud capabilities. Here’s the gist of what I found, in case you want to dig deeper into this topic:

  • AVG Protective Cloud Technology “uses multiple scanning engines and behavioral detection simultaneously to identify emerging and previously unknown threats. Once [it] identifies threats, solutions are developed and AVG clients around the world are updated in near real time.”
  • F-Secure Cloud “makes decisions on the reputation of files based on a wide range of criteria. As an example, prevalence—how common the file is in the online world—is now one of the key factors in the decision-making process through which malware is identified.”
  • Kaspersky Security Network “combines the capabilities of continuous globally distributed monitoring of real-life threats, a centralized analysis of threats using Kaspersky Lab’s substantial expert and technology resources, and the immediate generation and distribution of protection measures.”
  • McAfee Global Threat Intelligence “is a comprehensive, real-time, cloud-based threat intelligence service that enables McAfee products to protect customers against cyberthreats across all vectors—file, web, message, and network.”
  • Panda Cloud Protection “leverages Panda Security’s proprietary Collective Intelligence technology, which operates in the cloud harnessing the experience of Panda’s user community providing immediate protection against new malware in those first, most damaging hours and minimizing performance hit on local PCs.”
  • Sophos Live Protection “gives you a direct connection to the very latest information we have about new threats. Using our global intelligence network, we can spot new threats quickly and make sure your users are protected—immediately.
  • Symantec Insight “can identify how common or rare a file is, how old it is, its security rating, and how it might be associated with malware. Through context, Insight can identify new or rapidly mutating threats as well as rare but tightly targeted attacks.”