Interesting in depth research paper that address the question of if multiple AV protections in regards to signatures, IDS, reputational determination, and spam capability really increase malware detection capability. Based on this study, they indeed do. http://ids.cs.columbia.edu/sites/default/files/boggs_driveby_paper81.pdf
This http://ids.cs.columbia.edu/sites/default/files/boggs_driveby_paper81[.]pdf or this one: https://ids.cs.columbia.edu/sites/default/files/boggs_driveby_paper81[.]pdf Give: Not Found The requested URL /sites/default/files/boggs_driveby_paper81[.]pdf was not found on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request. Apache/2.4.10 (Ubuntu) Server at ids.cs.columbia.edu Port 443