Portable devices, such as Personal Digital Assistants (PDAs), are particularly vulnerable to malicious code threats due to their widespread implementation and current lack of a security framework. The presented research provides detail into specific scenarios, weaknesses, and mitigation recommendations related to data protection, malicious code, virus storage, and virus propagation.

Paper: Security Analysis of the Palm Operating System and Its Weaknesses Against Malicious Code Threats

Published by The USENIX Association in the Proceedings of the 10th USENIX Security Symposium, Washington, DC, August 13-17, 2001, pp 135-151, ISBN 1-880446-07-3.