User warning for fraudulent call phases

One or more tangible, nontransitory computer-readable storage media having stored thereon executable instructions to instruct a processor to:

• communicate with a backend analysis engine, wherein the backend analysis engine is to provide a periodically-updated assessment of a voice call, the assessment comprising an inferred call phase and a fraudulence score;
• and
• provide a graphical user interface (GUI) visible to a participant of the voice call, wherein the GUI is to display the inferred call phase and a visual fraud indicator based on a likelihood that the voice call is fraudulent.

A computer-implemented method of protecting a user of a device from fraudulent voice calls, comprising:

• communicating with a backend analysis engine, wherein the backend analysis engine is to provide a periodically-updated assessment of a voice call, the assessment comprising an inferred call phase and a fraudulence score;
• and
• providing a graphical user interface (GUI) visible to a participant of the voice call, wherein the GUI is to display the inferred call phase and a visual fraud indicator based on a likelihood that the voice call is fraudulent.