Tools that the United States created to eavesdrop on Soviet leaders and to track KGB spies are now being used to monitor Americans. One system, known as Echelon, intercepts and analyzes telephone calls, faxes and e-mail sent to and from the United States. The other system, Tempest, can secretly read the displays on personal computers, cash registers and automatic teller machines, from as far as a half mile away. Prophet (SAW)said, "Beware of suspicion, for suspicion is the worst of false tales; and do not look for the others' faults and do not spy, and do not be jealous of one another, and do not desert (cut your relation with) one another, and do not hate one another; and O Allah's worshipers! Be brothers (as Allah has ordered you!"). (Bukhari)