Beijing Key Laboratory of Network Technology;
School of Computer Science and Engineering;
Beihang University;
Beijing 100191;
China;
School of Computer Science and Information Technology;
Guangxi Normal University;
Guilin 541004;
China;
School of Cyber Science and Technology;
Beihang University;
Beijing 100191;
China;
security conformance; security SLA; cloud be-havior modeling;