Abstract: In response to a request to transmit a message from a sender to a recipient, risk values including low and high values are assigned to a content risk rating via comparing content of the message to content risk criteria, to a sender risk rating as a function of a sender identity, to a recipient risk rating as a function of a recipient identity, and to a dissemination reach rating of the message as a function of association to a security level of a message distribution channel. A total message risk score is determined from the content disclosure risk rating, sender risk rating, recipient risk rating and dissemination reach rating values. The message is transmitted from the sender to the recipient or if the total message risk score meets a high risk threshold value; otherwise, a mitigation action is applied to the message.

Abstract: In response to a request to transmit a message from a sender to a recipient, risk values including low and high values are assigned to a content risk rating via comparing content of the message to content risk criteria, to a sender risk rating as a function of a sender identity, to a recipient risk rating as a function of a recipient identity, and to a dissemination reach rating of the message as a function of association to a security level of a message distribution channel. A total message risk score is determined from the content disclosure risk rating, sender risk rating, recipient risk rating and dissemination reach rating values. The message is transmitted from the sender to the recipient or if the total message risk score meets a high risk threshold value; otherwise, a mitigation action is applied to the message.