I decided to try out the new Prevx1 professional version on my virtual computer testbed. After all updates and installation had been completed I decided to run my packet sniffer on logging mode just to see the sort of data being sent out. The following is what I logged: Date: XX <---- Todays date Server: Microsoft-IIS/6.0 pragma: no-cache cache-control: private X-PREVX-IP: X.X.X.X <----------- My IP address was here X-PREVX-ERROR: false Content-Length: 17 Content-Type: application/octet-stream Expires: XX Cache-control: no-cache Host: ron1.prevx.com Content-Length: 0 X-PREVX-soft: ZERO X-PREVX-hn: <---------- The Host name of my virtual computer was here X-PREVX-pcid: X X-PREVX-cid: X X-PREVX-sv: X X-PREVX-rc: 0 X-PREVX-profile: PREVX1 X-PREVX-mid: X <---------- a very long text string was here X-PREVX-lic: 0 X-PREVX-cmd: adtextexpired I have obviously replaced some information with an ''X'' because I did not know what it was but my main question is why do you think they send out IP addresses. I know they collect attack data but they say no data collected is personally identifiable. I emailed them about this and received no reply. If any Prevx1 users run a sniffer in logging mode, when you start up the console you to will probably see this data being sent out. For the moment I will continue to use the old version of Prevx Pro.