Protecting an application via an intra-application firewall

A system for building a secure computing device application, the system comprising:

• a computing device having a processor;
• and
• a computer readable storage medium having program instructions embodied therewith, the program instructions executable by the processor to cause the system to:
• scan one or more communication interfaces of a first application;
• determine, in response to the scanning, that at least a first component of the first application is subject to public access from any application;
• remove one or more public access features associated with the first component, wherein the first component is no longer subject to public access from any application;
• and
• add, to the first application, a first module to control access to data to or from the first component via one or more security rules.

A computer program product for building a secure computing device application, the computer program product comprising a computer readable storage medium having program code embodied therewith, the program code comprising computer readable program code configured for:

• scanning one or more communication interfaces of a first application;
• determining, in response to the scanning, that at least a first component of the first application is subject to public access from any application;
• removing one or more public access features associated with the first component, wherein the first component is no longer subject to public access from any application;
• and
• adding, to the first application, a first module to control access to data to or from the first component via one or more security rules.