There's been a lot of reporting about the first virus targeting handhelds. From CNet : "The first virus targeting Palm users has been discovered by antivirus software makers,
raising new questions about the security of handheld computers and wireless devices. The Phage.936 virus was discovered by antivirus researchers at McAfee.com and Finland-based
F-Secure last night. The virus erases third-party applications on infected Palm operating systems,
filling the display screen with a dark gray box."
September 23, 2000