Cyber-Technology was a blanket term given to inventions, weapons, and other devices of the Cybermen.
Whilst being highly advanced, Cybermen could not always rely on cyber-technology and, when beneficial, commandeered alien technology such as the Cryon's refrigerated cities. (TV: Attack of the Cybermen) The Seventh Doctor once used cybertechnology to try an analyse a sample of Warlock, but the analysis failed. (PROSE: Warlock)
When confronted by Kate Lethbridge-Stewart and UNIT, a Cyberman informed her that human weapons were ineffective against cyber-technology, before she presented it with a Cyberman head, informing them that humans had learned something of how to combat the Cyber-race. (TV: Death in Heaven)
In 2526, the Cyber-Leader stated, while watching the non-human Fifth Doctor use Cyber-Technology, that humans lacked the ability to understand it, an observation which tipped him off to the Doctor's identity. (TV: Earthshock)