I think that computers and the internet may represent the biggest threat to humanity ever - the transhumanist nightmare - because people want them and they are addictive: a lethal combination (far more dangerous to the soul than coercion).
As the technology gets 'smart' so the actual people get dumber - and in a subtly deceptive way: they can (to an extent) fool other people by passing-off the external data as their own knowledge - as with cut-and-paste or memorise-and-parrot.
And modern evaluations are seldom able to tell the difference between personal knowledge and re-presented stuff (only human judgement in sustained interaction can do that - and such evaluations are deemed subjective hence personally-biased).
If we consider the cognitive psychological division of input-processing-output - then the input is already almost monopolised by the mass media; the current step is for more and more processing/ thinking to be done online (in 'the cloud') with humans as small scale participants.
When both input and processing are determined - then output - i.e. human behaviour - is also determined.
In other words if/ when the Establishment are controlling what goes into thinking, and if thinking is being done by programmable computers - then everything that happens will be controlled.
At present most people voluntarily carry smartphones and use them nearly all the time - the next step is to make them wearable - but this may be leapfrogged and the technology will become implanted into the body - for extra convenience, and because people are addicted to distraction and want never to be separated from their internet and social media access.
And of course once the technology is implanted it cannot be avoided - so by controlling input and processing then humans will (so the theory of cognitive psychology goes) be controlled by whoever, or whatever, controls the computers.
Will modern man mind about this; or will he continue to labour and queue and pay to be the first and get the latest and most controlling tech? Will there be campaigns, demonstrations and riots protesting that some people are excluded from the implant revolution? Quite likely - if things ever get that far.
On the positive side, cognitive psychology is just a model, certainly not the whole truth - so there are many factors left out of the input-processing-output description that are important; and control of input and processing will not (when it comes to it) fully control human behaviour.
Nonetheless the degree of success of the mass media control of input is striking; and when processing is added onto it - it is likely that humans will indeed become highly, if not completely, controllable.
Against this actually being achieved is the decline in human intelligence and creativity combined with the exclusion of intelligence and creativity from modern institutions; then there is the ineffectiveness and inefficiency of the ever more pervasive bureaucracy (now constituting one massive, multi-system, linked bureaucracy) - which is further contaminated by endemic dishonesty.
And then there is the interdependence and fragility of the global system; self-paralysed increasingly by self-loathing and the covert wish for self-destruction and civilisational suicide.
Technological capability is already declining - and this may go so far and so fast as to prevent the transhumanist nightmare.
Like so many catastrophes - it is a race against time - and the only thing that stops it may need to be failure, rather than good sense or good morals.
More on this at: https://charltonteaching.blogspot.co.uk/2016/07/beyond-smartphone-and-wearable-computer.html