Device users today are increasingly using multiple smart connected devices simultaneously in order to manage their online lives and increase their productivity. This makes it difficult for users to accurately gauge or feel confident about their overall online security and privacy levels, and it also increases potential attack avenues for malicious actors. Interconnections and relationships between such smart connected devices may also further increase and complicate the security implications of the user's multi-device connected world. The systems and methods disclosed herein provide a single reference point to users that allows them to evaluate the security and privacy aspects of their various online activities and multi-device ecosystem via a single Security and Privacy Score (SPS) value. Statistical Process Control (SPC) techniques may also be applied to a user's SPS values over time to alert users of potentially anomalous security conditions, and suggest potential remedial actions to increase the user's SPS value.