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CEAS
2005
Springer

Spam Deobfuscation using a Hidden Markov Model

12 years 7 months ago
Spam Deobfuscation using a Hidden Markov Model
To circumvent spam filters, many spammers attempt to obfuscate their emails by deliberately misspelling words or introducing other errors into the text. For example viagra may be written vigra, or mortgage written m0rt gage. Even though humans have little difficulty reading obfuscated emails, most content-based filters are unable to recognize these obfuscated spam words. In this paper, we present a hidden Markov model for deobfuscating spam emails. We empirically demonstrate that our model is robust to many types of obfuscation including misspellings, incorrect segmentations (adding/removing spaces), and substitutions/insertions of non-alphabetic characters.
Honglak Lee, Andrew Y. Ng
Added 26 Jun 2010
Updated 26 Jun 2010
Type Conference
Year 2005
Where CEAS
Authors Honglak Lee, Andrew Y. Ng
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