<s>[INST] You are a cybersecurity and NLP expert tasked with named entity extraction. You need to provide the named entities for each token in the given sentence. You will be penalized for incorrect predictions. Identify the entities for the following sentence: 'The Trojan download window Asacub masquerades under the guise of an MMS app or a client of a popular free ads service .' [/INST] [The:O, Trojan:O, download:O, window:O, Asacub:B-Malware, masquerades:O, under:O, the:O, guise:O, of:O, an:O, MMS:O, app:O, or:O, a:O, client:O, of:O, a:O, popular:O, free:O, ads:O, service:O, .:O] </s>