Background: Internet offers opportunities to people with intellectual disabilities, but it also involves some risks. The aim of this study was to explore these issues considering caregivers and people with intellectual disabilities' perspectives. Materials and Methods: A descriptive, cross-sectional study was conducted. The sample consisted of 77 adults with intellectual disabilities and 68 caregivers from a Spanish service provider organisation. Results: Compared to previous research, findings show an increasing use of electronic devices such as smartphones and the Internet by people with intellectual disabilities. Some online risks (e.g., being insulted, being threatened, someone using their personal information) and undesirable behaviours of this group (e.g., insulting, threatening or flirting with someone who did not want to) were also identified. Differences between the responses of people with intellectual disabilities and their caregivers were found with regard to people with intellectual disabilities' online behaviour. Conclusions: It is important to design, validate and implement strategies to promote risk management and positive risk-taking actions for people with intellectual disabilities.