I've recently noticed an increase of viruses on my systems. We employ CA eTrust 8.1 for antivirus and all users are "Domain Users", and thus should not have access to install any software on their computer.
On random computer audits I've found malware with Malwarebytes Antimalware that eTrust has missed (realtime scanning is on) - It's found .exe files that I believe were not installed because there didn't seem to be any registry edits. I assume the majority of them are from browsing websites because they seem to be in the IE.5 folders.
What can I do to further prevent viruses from infiltrating my network? eTrust seems to be missing quite a bit with the realtime scanning and I'm not entirely convinced the installation of all .exe's is prohibited (I've had a couple users install Chrome by themselves).
Thanks in advance.