The 1999 International Information Security Workshop, ISW¿99, was held on Monash University¿s Malaysia Campus, which is about 20km to the south west of downtown Kuala Lumpur, November 6-7, 1999. ISW¿99soughtadi erentgoalfromitspredecessor, ISW¿97,heldinIshikawa, Japan, whose proceedings were published as Volume 1396 of Springer Verlag¿s LNCS series. The focus of ISW¿99 wason the following emerging areasof imp- tance in information security: multimedia watermarking, electronic cash, secure software components and mobile agents, and protection of software. Theprogramcommitteereceived38fullsubmissionsfrom12countriesand- gions: Australia, China, France, Germany, Hong Kong, Japan, Korea, Malaysia, Singapore, Spain, Taiwan, and USA, and selected 23 of them for presentation. Among the 23 presentations, 19 were regular talks and the