Today’s mobile smartphones are very powerful,
and many smartphone applications use wireless
multimedia communications. Mobile phone
security has become an important aspect of security
issues in wireless multimedia communications.
As the most popular mobile operating
system, Android security has been extensively
studied by researchers. However, few works have
studied mobile phone multimedia security. In
this article, we focus on security issues related to
mobile phone cameras. Specifically, we discover
several new attacks that are based on the use of
phone cameras. We implement the attacks on
real phones, and demonstrate the feasibility and
effectiveness of the attacks. Furthermore, we
propose a lightweight defense scheme that can
effectively detect these attacks