Some hints for theft protection and databases about stolen mobile computers .
FBI: Handbook of Forensic Services Evidence Examinations Electronic Devices Examinations - Personal Digital Assistants
For certain versions of KDEPIM a carefully crafted .VCF file potentially enables local attackers(http://www.kde.org/info/security/advisory-20040114-1.txt) to compromise the privacy of a victim's data or execute arbitrary commands with the victim's privileges.