||Anti-virus Trust level Healthy-Danger-Infected (ATHDI)
||Improved model that includes anti-virus program and trust- level of user
||More factors are considered for propagation analysis
||Impossible to detect the presence of email before the receivers receive the email
||Virus propagation is faster while users login in their accounts more frequently.
||Indicate the effects of the networks and users on SNS network.
||Assess of the anti-virus strategy is low.
||Propagation of the virus in the network is controlled by identifying the existence of the transmission chain in the network.
||It uses the contact list tracing to find the epidemiological links between host
||Limited to single enterprise, where it is possible to collect all necessary traffic information in a casual chain.
||Susceptible-Infected- Removed (SIR)
||Dynamic propagation of email virus was approximated for homogeneous network.
||Used in email and social network.
||Not suitable for heterogeneous network.
||Susceptible-Infected- Immunized (SII)
||This model is able to address two critical processes such as reinfection and self-start that is unsolved in the previous models.
||Avoid systems threats before infected by virus.
||Independent assumption and periodic assumption are unsolved problems