Fraudsters are exploiting weaknesses in call center and help desk user authentication processes. Common caller authentication methods are creating inconvenience for legitimate users. Current authentication methods fail in three ways. They are: 1. knowledge-based authentication (KBA) - KBA's are used to authenticate users.2. PINs. 3. Caller ID. The other two ways include PINs and Caller ID to authenticate users- all of which are accessible by criminal. The best security is always layered security. This principle holds true when securing telephony channel. Voice biometrics can catch fraudster voices and put them on a blacklist for future voice comparisons and verifications of callers. Phone printing combined with voice biometrics provides the strongest method for detecting fraudsters. To know more, read Avivah Litan's (vice president and distinguished analyst at Gartner) article at: http://www.itworldcanada.com/blog/preventing-fraud-in-the-call-center-use-voice-biometrics-phone-printing/97217#ixzz3D51sGlc6