GFI DownloadSecurity for ISA Server enables you to define which file types should be quarantined for administrator approval per user. You can also use this feature to monitor downloads and ensure that Internet bandwidth is not wasted on useless downloads. GFI DownloadSecurity scans all incoming HTTP and FTP downloads for known viruses. Integrated with GFI DownloadSecurity for ISA Server are two industrial-strength anti-virus engines. The signature files are updated immediately after new virus outbreaks become known.