Collaborative Reputation-Based Voice Spam Filtering

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Executive Summary

The authors propose a collaborative reputation-based voice spam filtering framework. Their approach uses the cumulative online duration of a VoIP user to derive his reputation value. And they leverage user feedback to mark unsolicited calls. For each unwanted call, their voice spam filter charges the caller a reputation point, and transfers this reputation point to the callee. To avoid VoIP users to manually label nuisance calls, their voice spam filter automatically marks all VoIP calls with short call durations as unsolicited. The preliminary simulation results show that their approach is effective to counter voice spam.

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