The present invention relates to a cable locking system which comprises a cable and a cable clamp having a first lever with a planar surface and having a second lever with a planar surface. The second lever is connected to the first lever in an articulated manner such that the two levers can be moved between a release position in which they are angled toward one another and a clamping position in which their planar surfaces contact one another and together define an opening for clamping the cable whose clear opening area decreases with an increasing approach to the clamping position. The first lever is interspersed in a locking region by a plurality of passage openings which are aligned with corresponding passage openings in the clamping position by which the second lever is interspersed in a locking region. The first lever furthermore has at least one angled section which rises from the planar surface such that it clampingly engages around a marginal section of the second lever in the clamping position and which is spaced apart from the joint at which the two levers are connected to one another by a smaller amount than each of the passage openings, but by a larger amount than the cable clamping opening defined by the two levers.