The term ‘bioterrorism’ seems to have become a kind of shorthand for sowing terror through the use of other ‘unconventional’ weapons, especially chemical, nuclear, and radiological weapons, or ‘dirty bombs’. The ethical problems associated with these other threats are closely associated with those raised by biological agents. Therefore, this article necessarily refers to these related potential terrorist technologies, all of them made more available to militant organizations through the spread of knowledge and material in the post-cold war era.