BIOSIG 2014, 13th International Conference of the Biometrics Special Interest Group, 10-12 September 2014, Darmstadt, Germany
This paper re-examines the threat of spoofing or presentation attacks in the
context of automatic speaker verification (ASV). While voice conversion and speech
synthesis attacks present a serious threat, and have accordingly received a great deal
of attention in the recent literature, they can only be implemented with a high level
of technical know-how. In contrast, the implementation of replay attacks require no
specific expertise nor any sophisticated equipment and thus they arguably present a
greater risk. The comparative threat of each attack is re-examined in this paper against
six different ASV systems including a state-of-the-art iVector-PLDA system. Despite
the lack of attention in the literature, experiments show that low-effort replay attacks
provoke higher levels of false acceptance than comparatively higher-effort spoofing
attacks such as voice conversion and speech synthesis. Results therefore show the
need to refocus research effort and to develop countermeasures against replay attacks
in future work.
Type:
Conference
City:
Darmstadt
Date:
2014-09-10
Department:
Digital Security
Eurecom Ref:
4441
Copyright:
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