The current study investigated associations among adolescents’ reports of harmfulness and family decision-making beliefs regarding potentially problematic cyber behaviors (e.g., talking to strangers online), cyber-specific information management strategies (disclosure, secrecy, concealment), and family rules regarding adolescents’ use of information and communication technology (ICT). The sample consisted of 159 adolescents aged 12 to 18 years (M = 14.45, SD = 1.72, 59% female, 80% Caucasian). Youth were more likely to disclose their ICT behavior when they recognized the harm associated with cyber risks and viewed their family as less restrictive about ICT activities. Age differences indicated that older adolescents’ ICT beliefs were more strongly related to their information management strategies, whereas families’ ICT rules were more predictive of cyber disclosure for younger adolescents. Results demonstrate that both adolescents’ conceptualization of ICT risks and families’ ICT-specific rules contribute to adolescents’ choice of information management strategies regarding ICT behaviors.