This paper focuses on crime and malfeasance in Nigerian port environments since the 1990s. The discourse on crime patterns in Nigeria is often subsumed under the depredations of pirates in the Gulf of Guinea because of the immediate ramifications for international shipping. However, since the late 1900s, the incidence of crime and malfeasance in Nigerian ports, ranging from pilfering to smuggling and armed robbery, has posed a challenge to their marketability and favoured-port status within the sub-region, prompting the government’s remedial action plans prior to the implementation of the isps Code. Using primary and secondary sources, the study finds that criminals tended to adjust their tactics to evade emergent changes in port infrastructure and law enforcement networks. It concludes that the internationalisation of maritime security measures in the new millennium curtailed the most common misdemeanours, leaving the high-profile, classes of white-collar port crimes which thrive under elite protection yet to be fully addressed.