Google Drive not being blocked correctly

Hi,

We're having some issues preventing access to Google Drive.

We're currently running Triton Web Security build 7.8.1.1485.

The category Personal Network Storage and Backup is blocked blocked for most users. When I use the URL Category and Test Filtering tools, all of the drive.google.com URLs I test are properly categorized and show that they should be blocked.

However, in practice, users are able to access Google Drive without any issue.

I used the TestLogServer tool to take a look at the traffic, and everything it picked up was showing up in the category Search Engines and Portals. Here's a sample of the output:

DestinationIp= 173.194.43.44

time= Wed Apr 09 17:18:18 2014   version= 6

disposition= 1026 - Category Permitted

URL= HTTPS://173.194.43.44

protocol= 11 - HTTPS  port= 443  networkDirection= Inbound

category= 76 - SEARCH ENGINES AND PORTALS

categoryReason= 1 - Master Database: URL

Is there a way to differentiate the traffic to drive.google.com from other Google traffic so we can block it?

Thanks!