Title :
The metric of bulk repeated call detection
Author :
Hu, Nan ; Gengyu We ; Wei, Gengyu ; Yixian Yang
Author_Institution :
Key Lab. of Network & Inf. Attack & Defense Technol. of MOE, Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
Spam over Internet Telephony (SPIT) has become a serious issue for VoIP applications. SPIT detection is gaining huge focus in recent years. In this paper, we analyzed SPIT calls encoded using VBR method with the feature of bulk repeated. The chi-square test is used to intuitively verify the similarity among the lengths of VoIP packets which are with the characteristic of bulk repeated. In addition to chi-square test, edit distance is introduced to measure the similarity among VoIP calls which can be aided in bulk repeated call detection. It is empirically inferred that the proposed metric may be as good as possible to detect bulk repeated call.
Keywords :
Internet telephony; encoding; unsolicited e-mail; variable rate codes; voice communication; VBR method; VoIP application; VoIP packet; bulk repeated call detection; chisquare test; spam over Internet telephony; Cryptography; Educational institutions; Helium; Industries; Measurement; Privacy; Unsolicited electronic mail; VBR; chi-square test; edit distance; sequence similarity;
Conference_Titel :
Broadband Network and Multimedia Technology (IC-BNMT), 2010 3rd IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-6769-3
DOI :
10.1109/ICBNMT.2010.5705278
