Image forming apparatus, control method thereof, and storage medium

The present invention relates to an image forming apparatus, a control method thereof, and a storage medium, the image forming apparatus comprising: an imaging controller configured to control the image forming apparatus to perform an imaging operation; a nonvolatile memory configured to store a program to be verified; a security chip configured to read the to-be-verified program stored in the nonvolatile memory, perform security verification on the to-be-verified program and send the to-be-verified program to a to-be-verified program loader corresponding to the imaging controller, wherein theto-be-verified program loader begins to execute the to-be-verified program after receiving the to-be-verified program; in the process that the security chip performs security verification on the to-be-verified program, if the security chip determines that the to-be-verified program does not meet the security requirement and the current imaging controller is executing the to-be-verified program,the security chip controls