A computer-implemented method includes associating a tag with a message in a log, where the message describes a logged event. A life parameter associated with the tag is calculated, using a computer processor, where the life parameter indicates a dynamic time period during which the tag remains in a state that is active. Alerting of the tag occurs by way of a first alert manner while the state of the tag is active. It is detected that the dynamic time period indicated by the life parameter has ended. The state of the tag is changed from active to dormant, where changing the state includes ceasing the alerting of the tag by way of the first alert manner.