In the age of ubiquitous mobile computing and subsequent threats and attacks, wireless device security is a critical topic that affects almost everyone. From government agencies and large corporations subject to cyber attacks and espionage to individual users subject to identity and financial theft, wireless device security must be urgently addressed in a scientific and quantitative manner. In this work, a software tool that facilitates assessment and management of wireless device security risk is proposed. The Wireless Device Security Risk Meter provides this critical tool for decision makers, system and network administrators, as well as individuals. Using game theory and statistically-driven methodologies, the Risk Meter provides objective, quantitative risk assessment, and unlike any other tool available today, guidance for allocating resources to bring an undesirable risk down to a user determined "tolerable level" in a cost-effective manner. As such, those in government, industry, and private life will be greatly aided in their efforts to achieve greater wireless device security by the use of this rational and objective tool for assessing and mitigating risk.