A computer program product for identifying and purging unwanted contacts, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, wherein the computer readable storage medium is not a transitory signal per se, the program instructions executable by a system comprising one or more processors to cause the system to perform a method comprising:
- building, by the system, a persona profile for a person of the electronic group communication during a first period of time, wherein the person is associated with a first contact number, wherein the persona profile is built based at least in part on extracting, during the first period of time, from a plurality of interactions in the monitored electronic group communication, behavior data that is associated with the first contact number;
- detecting, by the system, during a second period of time, whether the person associated with the first contact number has changed by at least detecting, during the second period of time, whether the persona profile for the person has changed;
- and
- after detecting, during the second period of time, that the persona profile for the person has changed, transmitting, by the system, an alert to at least one of the two or more people of the monitored electronic group communication indicating that the person associated with the first contact number has changed.