Provided are a digital security system, method and a program that prevent erroneous reports and failed reports to improve reliability, while allowing reporting an abnormal situation in security, even in front of a suspicious person, without the suspicious person's awareness. The digital security system comprises an abdominal pressure signal acquisition unit (101) that acquires an abdominal pressure signal from an abdominal pressure sensor (10) for detecting a user's abdominal pressure and acquires a respiration signal from a respiration sensor (20) for detecting the user's breathing, an abdominal pressure signal extraction unit (102) that subtracts the respiration signal component from the acquired abdominal pressure signal to extract an abdominal pressure signal with suppressed influence of respiration, an abnormality determination unit (112) that determines whether it is abnormality based on the abdominal pressure signal from which the respiration signal component has been subtracted, and an alarm sending unit (203) that reports an abnormal situation based on a determination result as being the occurrence of an abnormal situation.
