A game-theoretic analysis of preventing spam over Internet Telephony via audio CAPTCHA-based authentication.
Yannis SoupionisRemous-Aris KoutsiamanisPavlos S. EfraimidisDimitris GritzalisPublished in: J. Comput. Secur. (2014)
Keyphrases
- theoretic analysis
- user authentication
- multimedia
- security mechanisms
- video files
- computer games
- video games
- visual information
- multimedia information
- game theory
- audio visual
- electronic payment
- anti spam
- signal processing
- video on demand
- virtual world
- spam detection
- authentication protocol
- online game
- spam filtering
- digital video
- nash equilibria
- nash equilibrium
- educational games
- image authentication
- visual data
- search engine