An information processing apparatus includes a housing that accommodates electronic components for processing security information, a power source that supplies power to the electronic components, a detection circuit that is connected in parallel to the power source with respect to the electronic components and detects an abnormality when a physical opening action affects the housing, a memory processing section that deletes the security information or makes it impossible to read out the security information from a memory in the electronic components when the abnormality is detected, and a notifying section that notifies the abnormality when the abnormality is detected. When the abnormality is detected, power is supplied from the power source to the memory.