Before revision:  In response to this problem , this paper models a class of malware with  "unbreakable" security attributes--UBM (UnBreakable Malware). We have systematically studied such threats from models, methods, experiments , evaluations, and defenses . Specifically, first, we conducted a formal definition and security attribute research on UBM.
After revision:  In response to this problem , this paper models a class of malware with "unbreakable" security attribute-unbreakable malware (UBM) , evaluations, and defenses . Specifically, first, we conducted a formal definition and security attribute research on UBM.