|Ven, an Ocanti male (2375)|
In 2375, the Borg Collective detected one of Species 6339's last surviving shuttlecraft with thirteen individuals aboard, and a cube was sent to intercept it. However, unbeknownst to the Borg, Species 6339 had introduced a synthetic pathogen made to attack the programs in a Borg cube's vinculum. The virus brought chaos to the Borg's ordered hive consciousness, which led to the destruction of the cube.
The intentions of Species 6339 were that once another Borg ship had retrieved the vinculum from the destroyed cube, it would infect that ship, with the possibility of infecting dozens, perhaps hundreds of Borg vessels. (VOY: "Infinite Regress")
In the computer game Star Trek Online, this species is called the "Octanti". Remembering the near-extinction of their people nearly four decades before, the Octanti are dedicated to eradicating all Borg, making no distinction between the freed drones of the Borg Cooperative and the main Collective.