Abstract: The present invention relates to a securing device for protecting individuals against falling, with two stop elements which can be attached releasably to a positionally fixed securing element and can be connected via a connecting element to the individual. Each stop element has a locking device which can be adjusted between an unlocking state, in which the stop element can be attached to the securing element or released therefrom, and a locking state, in which the stop element cannot be released from the respective securing element. A coupling device is coupled to the locking devices of the stop elements in such a manner that, in the unlocking state, the locking device of the other stop element is blocked in its locking state. A preferred construction of the coupling device has a blocking lever which can be pivoted into a blocking position for blocking the locking device in its locking state.