The Borg Queen states openly while interrogating Data that she considers the Borg's biggest weakness to be their remaining vestiges of humanity (humanoidity?), something that the Borg constantly strive to "transcend" as they assimilate and adapt (in contrast to Data, a sentient artifice who seeks to become more human). The Borg are a major threat in Star Trek: TNG and Star Trek: Voyager (I haven't watched the latter, but looking at this it seems they are). Those two series happen at roughly the same time as DS9...
star trek - Why is there no Borg threat in the DS9 series? - Science ... Are there any canon sources which indicate that the Dominion was aware of the Borg? If so, do those sources indicate what the Dominion planned to do about them?
borg cube fridge, I find it hard to believe that the... star trek - Were the Dominion aware of the Borg? - Science Fiction ... A Borg Sphere managed to escape and travel back in time, leading to: The attempted assimilation during First Contact: where the Sphere was destroyed by the Enterprise-E and the Borg were defeated in the subsequent attempt to gain control of the Starship itself, thus preventing them to change history and create a future where Earth would be ... star trek - What are the known Borg failed assimilations?
borg cube fridge, - Science ... I don't think the NX-01 that dealt with the Borg (caused by future events in First Contact) is the same NX-01 that was in the TNG's history (until maybe after First Concact). Temporal mechanics is hard (and a great way to retcon things).
