On the study of anomaly-based spam filtering using spam as representation of normality
Carlos Laorden, Xabier Ugarte-Pedrero, Igor Santos, Borja Sanz, Javier Nieves, Pablo G. Bringas · 2012
In previous work, we presented the first spam filtering method based on anomaly detection that reduces the necessity of labelling spam messages and only employs the representation of legitimate e-mails. This method achieved high accuracy rates detecting spam while maintaining a low false positive rate and reducing the effort produced by labelling spam. In this paper, we study the performance of our previous method when using spam messages to represent normality.