Protection Against Spam Using Pre-Challenges

Security and Privacy in the Age of Ubiquitous Computing - IFIP Advances in Information and Communication Technology ◽

10.1007/0-387-25660-1_19 ◽

2005 ◽

pp. 281-293 ◽

Cited By ~ 2

Author(s):

Rodrigo Roman ◽

Jianying Zhou ◽

Javier Lopez

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