The decay and failures of web references
Communications of the ACM
Design and Implementation of a Distributed Crawler and Filtering Processor
NGITS '02 Proceedings of the 5th International Workshop on Next Generation Information Technologies and Systems
Proceedings of the 4th ACM SIGCOMM conference on Internet measurement
Pricing electronic mail to solve the problem of spam
Human-Computer Interaction
An anti-spam scheme using pre-challenges
Computer Communications
A scalable intelligent non-content-based spam-filtering framework
Expert Systems with Applications: An International Journal
Using GMDH-based networks for improved spam detection and email feature analysis
Applied Soft Computing
Social network analysis of web links to eliminate false positives in collaborative anti-spam systems
Journal of Network and Computer Applications
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The main purpose of most spam e-mail messages distributed on Internet today is to entice recipients into visiting World Wide Web pages that are advertised through spam. In essence, e-mail spamming is a campaign that advertises URL addresses at a massive scale and at minimum cost for the advertisers and those advertised. Nevertheless, the characteristics of URL addresses and of web sites advertised through spam have not been studied extensively. In this paper, we investigate the properties of URL-dissemination through spam e-mail, and the characteristics of URL addresses disseminated through spam. We conclude that spammers advertise URL addresses non-repetitively and that spam-advertised URLs are short-lived, elusive, and therefore hard to detect and filter. We also observe that reputable URL addresses are sometimes used as decoys against e-mail users and spam filters. These observations can be valuable for the configuration of spam filters and in order to drive the development of new techniques to fight spam.