Always be sure to check if the remoteExecutedOwner is not equal to 0 when sending a remoteExec/remoteExecCall packet back, as this will result in sending packet to ANYONE (0):
if (remoteExecutedOwner isEqualTo 0) exitWith {}; // invalid RE owner
_gearArray remoteExecCall ['someGearFunction', remoteExecutedOwner];
Will prevent from code being accidentally sent to everyone on the server.