<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: 'For the past five months , Check Point researchers have quietly observed the China-based advertising company behind HummingBad in several ways , including by infiltrating the command and control servers it uses .' [/INST] [For:O, the:O, past:O, five:O, months:O, ,:O, Check:B-Organization, Point:I-Organization, researchers:O, have:O, quietly:O, observed:O, the:O, China-based:O, advertising:O, company:O, behind:O, HummingBad:B-Malware, in:O, several:O, ways:O, ,:O, including:O, by:O, infiltrating:O, the:O, command:O, and:O, control:O, servers:O, it:O, uses:O, .:O] </s>