Facebook is the most popular social network in most nations and in Turkey. It is argued that it can involve insecure behavior in adolescents. Teenagers in Turkey are to receive tablet computers nationwide through the FATIH project. Personal availability is likely to impact Internet and Facebook habits. Also, with lack of social support, teens might more intensely engage in Facebook. This study identifies teens who are more likely to perform less secure Facebook activities. A survey was conducted on 4,261 middle and high school students in Turkey. Logistic regressions were run to predict the likelihood of Facebook-related behaviors. Results showed that teens who perceive support from significant others, males, metropolitans, and teens who have more tablet computer opportunities, competencies and beliefs were more likely to engage in risky activities. Family support significantly reduced the likelihood of risky behaviors. Results call for promoting family support and monitoring tablet computer habits. Teens should be educated about social network threats and privacy.