Patent Document ID: 9465789
Application ID: 13851199

Base Claim:
1. A method of detecting spam in web sites, the method comprising: obtaining a text entry; detecting a number of character transitions between character sets in the text entry, wherein the character sets (i) each correspond to different alphabets and (ii) are different subsets of a character encoding that maps characters from multiple alphabets to respective binary numbers for use by computers; calculating, with a computer, a score indicative of the likelihood that the text entry is spam based on the number of character transitions; and labeling the text entry as spam based on the score.

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Claim 6:
6. The method of claim 1 , wherein detecting a number of character transitions between character sets in the text entry comprises: obtaining from memory the subsets of the character encoding; determining that a character in the text entry is encoded with a different subset of the character encoding than a previous character in the text entry; and incrementing a transition count for the number of character transitions between character sets in the text entry.