Google "Unusual traffic from your computer network" notification

["Michael J. Kenney" <m.kenney () USCIENCES EDU>]

We've been getting these notifications pretty much on a daily basis and trying to find the problem is like finding a 
needle in a haystack. https://support.google.com/websearch/answer/86640?hl=en

Anyone happen to have a short term solution that could help find the infected computer(s) such as traffic patterns that 
are being sent to Google? Also a long term solution possibly an anti-malware appliance such as FireEye that could help 
protect against these types of threats that our Sonicwall IPS cannot? We have a Snort server, but that is more reactive 
than proactive and there are just too many.


Thanks,

Michael