Up to 80 percent of certain anonymous underground forum users can be identified using linguistics. The identification is possible thanks the analysis of function words that are words that serve to express grammatical relationships with other words within a sentence and are strongly related the attitude or mood of the speaker. The method adopted by researchers is based on the comparison of various posts across forums and other social media, such as social networks or blogs. The main methods of circumventing writing style analysis are:.Obfuscation An author attempts to write a document in such a way that the writing style will be recognized that the author will not be recognized.”]