Samenvatting

The literature on using Social Network Analysis (SNA) in criminological research is expanding. The SNA perspective already changed the way we look at organized crime. More often organized crime is referred to as changeable social networks instead of hierarchical structured organizations like the Italian or American mafia. In this respect, SNA seems to lack behind in empirical research on organized crime. Mainly, this is due to the lack of suitable network data on organized crime. For obvious reasons, commonly used methods of gathering network data – such as questionnaires – are less suitable for research on organized crime. Suspects of organized crime have not much to gain from talking about their ‘comrades in crime’. Alternative data need to be explored. Wiretaps from criminal investigations are one such source. In this contribution the SNA perspective is used to present an overview of the possibilities and limitations of using wiretaps for SNA. It follows that wiretaps from criminal investigations should be regarded as ego-centered network data. Therefore, research questions and objective for both criminal investigations as well as scientific research should be directed to the personal networks of suspects instead of the network as a whole.