Do you guys have a dedicated trading workstation where no internet surfing occurs? Only Trading platforms,bloomberg anywhere etc.. are used on the machine. Second workstation is used for general internet usage etc on a different VLAN. Trading VLAN has an outbound ACL that only permits traffic to Trading networks etc.. The General use VLAN has no access to the trading VLAN, Both on a Fortigate with IPS/AV/App controll etc. Wireless APs on a third VLAN this is where the iPads etc.. live on. All workstations Macs with the exeption of a VM for apps not yet ported to OS X. The internet is a wild wild west and you need to have all the security in the world to avoid ransomware,dataloss,compromise of accounts. I have battery backups and generator. Right now massive power loss in the neighborhood so I am working on backup power no problem.