A method, system, and/or computer program product enables secure debugging of a software application. A first computer receives a secure software application from a second computer. Access to data used by the secure software application is protected by a security object, which allows a processor to access the data used by the secure software application without permitting data to exit unprotected from the processor. The first computer receives from the second computer an encrypted secure sidecar debugging application that is designed to debug the secure software application. In response to detecting an error in execution of the secure software application within the first computer, the first computer transmits the secure software application and the secure sidecar debugging application to the second computer, such that the second computer is enabled to decrypt the secure sidecar debugging application and to debug the secure software application.