Firewalls: If you're connected to the Internet (and who isn't), your PDA, just like your PC may be vulnerable. Consider a firewall product. See BlueFire Mobile Firewall from BlueFire Security Technologies for an example.
Virus protection: It pains me deeply to think that some yoyo out there has enough time on his hands to write viruses for PDAs, but, yes, they're doing it. You need to be prepared, and antivirus software for PDAs is now quite common. See eTrust Antivirus from Computer Associates International, Inc. and PC-cillin for Wireless from Trend Micro, Inc. to get an idea of what's available.
And finally, moving enterprise data to a PDA is an excellent opportunity to review your corporate security policy. This document defines what needs to be protected and how, and is based on an analysis of costs related to what happens if data is not properly protected. For example, who should be able to put enterprise data on a PDA? Should users mix business and personal use of the PDA? If you don't have a security policy, now's a good time to put one in place. After all, if you don't fully understand your security and other operational requirements, most other steps you take to protect your mobile data will be, at the very least, less than optimal.
Copyright 2003 by Farpoint Group. All rights reserved.