What is it?
Mcafee Web Scan - webscanx.exe

What does it do?
webscanx.exe? - This application is designed to scan and protect you from quite a few web based attacks such as viruses coming through your emails to activeX exploit protection and even the files you download. I would call this a vital process.

Virus Precautions:
You'll want to keep an eye on this google search for any known viruses. The normal location of this file is C:Program FilesMcAfeeMcAfee VirusScanWebscanx.exe