System and method operative for monitoring communications and identifying imposter tx communicants who are pretending to contact an rx end user, from a telephone line associated with an organization which the imposter tx is not really calling from. Also, system and method for confirming authenticity of an organizational affiliation claim (claimed organizational affiliation), comprising providing a database of organizations, using a server/processor to access the database; and, via a channel of communication to end-users allowing end-users to receive from the processor an authentication of the claimed organizational affiliation.