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Audio CAPTCHA for SIP-Based VoIP - Springer
https://link.springer.com/content/pdf/10.1007%2F978-3-642-01244-0_3.pdf
2017-8-27 · Audio CAPTCHA for SIP-Based VoIP 27 Fig.1. A generic CAPTCHA development process The first requirement implies that user studies are necessary in order to evaluate the effectiveness of CAPTCHA. The latter ones imply that a test with a new property is required: the test must be easy to generate, but intractable to pass without special
Audio CAPTCHA for SIP-Based VoIP | SpringerLink
https://link.springer.com/chapter/10.1007%2F978-3-642-01244-0_3
2009-5-18 · We focus on and develop audio CAPTCHA, as the audio format is more suitable for VoIP environments and we implement it in a SIP-based VoIP environment. Furthermore, we suggest and evaluate the specific attributes that audio CAPTCHA should incorporate in order to be effective, and test it against an open source bot implementation.
Audio CAPTCHA: Existing solutions assessment and a new ...
https://www.researchgate.net/publication/222074548_Audio_CAPTCHA_Existing_solutions_assessment_and_a_new_implementation_for_VoIP_telephony
Next, we develop and implement a new audio CAPTCHA, which is suitable for SIP-based VoIP telephony. Finally, the new CAPTCHA is tested against …
Blind and Human: Exploring More Usable Audio …
https://www.usenix.org/system/files/soups2020-fanelle_0.pdf
2020-8-10 · Soupionis et al. [31] implemented an audio CAPTCHA pro-totype for SIP-based Voice over IP (VoIP). However, their design was only tested with sighted users, raising concern about real-world outcomes for PVI’s. [35]. Gao, Haichang, et al. [14] also designed a secure audio CAPTCHA that requires humans to read a sentence aloud
(PDF) SPAM prevention in VoIP networks via security ...
https://www.researchgate.net/publication/272418809_SPAM_prevention_in_VoIP_networks_via_security_policies_and_audio_CAPTCHA
PDF | On Jul 11, 2011, Yannis Soupionis published SPAM prevention in VoIP networks via security policies and audio CAPTCHA | Find, read and cite all the research you need on ResearchGate
Audio CAPTCHA: Existing solutions assessment and a new ...
https://www.sciencedirect.com/science/article/pii/S0167404809001412
2010-7-1 · Vocabulary: the vocabulary was limited to digits {0, …, 9}, because the audio CAPTCHA was designed for an SIP-based VoIP system where DTMF signals need to be sent. 8.2. CAPTCHA developmentThe audio CAPTCHA development was carried out in five stages, in terms of the number of attributes adopted.
Privacy-preserving, User-centric VoIP CAPTCHA …
https://core.ac.uk/download/pdf/42143557.pdf
2016-7-28 · Soupionis and Gritzalis (2010) classified the audio CAPTCHA attributes, evaluated the current popular audio CAPTCHA implementations and developed a new audio CAPTCHA for VoIP environments. The CAPTCHAs were classified based on their attributes into four categories: (a) vocabulary, (b) background noise, (c) time, and (d) audio production.
Automated Telephony Testing - ResearchGate
https://www.researchgate.net/publication/277757866_Automated_Telephony_Testing
Request full-text PDF. Citations (0) ... Audio CAPTCHA for SIP-based VoIP. ... as the audio format is more suitable for VoIP environments and we implement it in a SIP-based VoIP environment ...
Human or bot? Let an audio CAPTCHA decide
http://www.infosec.aueb.gr/Publications/PRACSE-2009.pdf
2015-12-12 · Let an audio CAPTCHA decide. 2 of 14 C o n t e n t s Session Initiation Protocol (SIP) Spam over Internet Telephony (SPIT) CAPTCHA: Development and attributes ... managing SIP-based spam over Internet Telephony”, Journal of Computer Security, Vol. 19, No. 5, pp. 835-867, 2009. 5. Marias J., Dritsas S., Theoharidou M., Mallios J. Gritzalis D ...
SIP Basics - MIT
https://web.mit.edu/sip/presentations/np119.pdf
2005-1-5 · SIP Basics CSG VoIP Workshop Dennis Baron January 5, 2005. Dennis Baron, January 5, 2005 np119 Page 2 ... – Text based messaging – URIs – ex: sip:[email protected]. Dennis Baron, January 5, 2005 np119 Page 7 Where’s SIP Application ... m=audio 8766 RTP/AVP 96 97 0 8 18 98 a=rtpmap:96 eg711u/8000/1
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