A distance measuring optoelectronic safety sensor (10) for monitoring a monitored zone (18) having at least one protected zone (48) is provided, wherein the safety sensor (10) has a light receiver (24) for generating a received signal on light reception from the monitored zone (18) as well as an evaluation unit (30, 32) which is designed to detect objects (52) in the monitored zone (18) with the aid of the received signal and to determine their position, including their distance from the safety sensor (10), and to output a securing signal on recognition of an unpermitted object intrusion (52) into a protected zone (48). In this respect, the evaluation unit (30, 36) is designed to determine and output the distance of detected objects (52) from the protected zone (48).