1. A method comprising: maintaining, by a computing device of a private network, threat information in a database comprising one or more of firewall logs and historical threat logs, wherein the threat information includes information regarding security threats detected by one or more network security devices associated with the private network; receiving one or more threat filtering parameters, by the computing device, wherein the one or more threat filtering parameters are selected from a group comprising a parameter specifying one or more types of threats, a parameter specifying one or more levels of severity of the threats, a parameter specifying a source interface, a parameter specifying a destination interface, a parameter specifying a time period associated with the threats and a parameter specifying a frequency of occurrence of the threats; extracting, by the computing device, information regarding a plurality of threats from the database based on the one or more threat filtering parameters; and presenting, by the computing device, the extracted information in a form of a interactive historical graph illustrating a number of threats by type of threat during the time period; receiving from an administrator of the private network, by the computing device, an indication, via interaction with the interactive historical graph, regarding a selected subset of the time period in which to zoom into for further details; and responsive to the indication regarding the selected subset, presenting, by the computing device, the further details in a form of a list of the plurality of threats corresponding to the selected subset, wherein the list of threats is grouped by the type of threat and ordered by group in accordance with associated levels of severity of the threats in the list of threats.