Covert Channel based Malicious Transaction Detection in Survivable MLS/DBMS
Jin Hu Sun · Dianzi xuebao · 2009
Current concurrency control protocols can not eliminate all covert channels in multi-level secure database management systems(MLS/DBMS).Existence of covert channels leads penetrated malicious transactions leak and interpolate confidential information.To improve database survivability,covert channels in MLS/DBMS are firstly analyzed.Then Conspired and malicious noise transactions can be detected based on malicious transaction characteristics and abnormal varieties of covert channel capacities by simulated parameters and experiments according to real systems.Further,transitive property of multi-conspiracies along with the influence of malicious noise transaction is analyzed.