'Drink spiking' refers to drugs or alcohol being added to a person's drink without their consent. It has become a growing problem worldwide, and has come to be associated with sexual assault and theft. It is notoriously difficult to determine the exact number of drink spiking incidents which occur within the community, due in part to the covert nature of the act and the difficulty in verifying whether a reported incident has actually occurred. Research Brief 2006/30 examines this emerging issue and why it occurs. It also looks at measures that may be implemented to reduce the incidence of drink spiking, including legislative amendments proposed by the Criminal Code (Drink Spiking) and Other Acts Amendment Bill 2006 (Qld) to create the offence of unlawful drink spiking.