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Messaging Behind Closed Doors

Compliance with internal policies and external regulations might be a driver but it isn't the only reason to monitor internal messages. With all the mobile devices that divide their time on and off the corporate network, it's becoming easier for malware to slip into the organization via someone's briefcase. Message attachments don't have to pass through a firewall if they ride in on portable media or get stored as a file and duplicated before a device is synched up with a server.

The good news is that you no longer have to purchase and manage separate control systems to monitor inbound/outbound and internal message traffic. For Exchange servers, Nemx just brought out a new version of its SecurExchange product that monitors what Nemx president John Young calls the four critical levels of security: Inbound threats; outbound policy violations, internal monitoring for enforcing compliance and acceptable use policies; and after-the-fact scanning to locate violations in existing message stores.

That's a step in the right direction. Expect more and more vendors to do something similar. But those with appliance-based systems that sit at the perimeter will have to work up a new way to include internal protection.

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