Vote for BitDefender Security for ISA Server
BitDefender Antivirus 2010 provides advanced proactive protection against viruses, spyware, phishing attacks and identity theft, without slowing down your PC.
Protects against viruses and other malware, scans all web, e-mail and instant messaging traffic in real time, blocks spyware programs, blocks certain web pages, prevents personal information from leaking via e-mail, web or instant messaging, reduces system load and many more features included.