US Patent 11336671 Method and apparatus for detecting anomaly in a plurality of devices by collectively analyzing information on devices

Provided are a method for detecting an anomaly in devices, the method being performed by a computing device and comprising: acquiring operation information on a first device connected to a security management unit (SMU) of a first domain, and operation information on a second device connected to a SMU of a second domain, and detecting an anomaly in the first device and/or the second device by comparing the operation information on the first device with the operation information on the second device, wherein the SMU of the first domain is not directly connected to the SMU of the second domain.