A computer-implemented method comprising: parsing, using at least one parser of a cell , a nested file , the nested file having a primary file and at least one secondary file embedded within the primary file , wherein the cell can include hardware, software, firmware, and/or the like components; assigning, using the cell , a maliciousness score for the parsed primary file and the parsed at least one secondary file ; generating, by the cell , an overall maliciousness score for the nested file , the overall maliciousness score based on at least one of the assigned maliciousness score for the parsed primary file and the parsed at least one secondary file , the overall maliciousness score indicating a level of confidence that the nested file contains malicious content; and providing, the overall maliciousness score to a data consumer indicating whether to proceed with consuming the nested file ; characterized in that the at least one secondary file has a second file format unknown to the cell and the operations further comprise identifying, by the cell , that the second file format is unknown to the cell; requesting, from a cloud service accessed over a network , parsing information associated with the second file format; receiving, from the cloud computing database over a network , the parsing information associated with the second file format; instantiating, using the parsing information associated with the second file format, a parser associated with the second file format for parsing files having the second file format; and, parsing using the parser associated with the second file format the at least one second file having the second file format. parsing, using at least one parser of a cell , a nested file , the nested file having a primary file and at least one secondary file embedded within the primary file , wherein the cell can include hardware, software, firmware, and/or the like components; assigning, using the cell , a maliciousness score for the parsed primary file and the parsed at least one secondary file ; generating, by the cell , an overall maliciousness score for the nested file , the overall maliciousness score based on at least one of the assigned maliciousness score for the parsed primary file and the parsed at least one secondary file , the overall maliciousness score indicating a level of confidence that the nested file contains malicious content; and providing, the overall maliciousness score to a data consumer indicating whether to proceed with consuming the nested file ; characterized in that the at least one secondary file has a second file format unknown to the cell and the operations further comprise identifying, by the cell , that the second file format is unknown to the cell; requesting, from a cloud service accessed over a network , parsing information associated with the second file format; receiving, from the cloud computing database over a network , the parsing information associated with the second file format; instantiating, using the parsing information associated with the second file format, a parser associated with the second file format for parsing files having the second file format; and, parsing using the parser associated with the second file format the at least one second file having the second file format. <EOS>