This chapter focuses on surveillance and the intrusion of privacy. It presents how the diffuse organisation of security raises challenges to democracy, followed by an overview of how assembling suspicion through surveillance enacts various limits of democracy. The chapter explores how assembling suspicion poses quite radical challenges to democracy by undermining key processes through which one often tries to recapture democratic politics in relation to surveillance. It introduces how surveillance limits the capacity for reflectively engaging the assembling of suspicion and its implications for conceptions of resistance. The chapter looks at Kirstie Ball's work to introduce in more detail a set of categories that retain the focus on the extraction of information on individuals, and raises further insights in how the assembling of suspicion enacts limits of democracy. The diffuse nature of surveillance, policing and risk governance challenges central mechanisms of democratic control and distribution of power.