The previous sentences should be clarified: 1) is 'generating hashes' the same thing of having polymorphic code? 2) are 'multitude of files' mean having legitimate files mixed-in with trojan files? 3) why are Android devices "more prone" to Trojan-dropper in comparison with other malwares / devices (en)
The article doesn't describe availability attack. (en)
Quantify and date the claim "increased". What year? During what timeframe? From what old amount to what new amount? (en)
Source doesn't mention any of the prevention techniques found here. (en)
It's unclear what this paragraph is meant to convey. It seems to consist of sentences conveying different messages with no coherence. (en)
This document doesn't describe black-hatter as someone who specifically creates computer viruses or tries to cause damage. (en)
The article barely supports / does not directly support these two statements at all. (en)