answer:North Korea is one of the most difficult nations on Earth for Western intelligence agencies to operate in. They have a strong fibre optic communications network, which is much more difficult to hack into than wireless communications. They also restrict and closely monitor the movements of practically every foreigner in the country. While Western intelligence agencies undoubtedly have a presence there, I think the target of any sabotage attempts would likely have been the rocket itself, rather than the satellite, since the launch was widely regarded as a disguised missile test. I think it is far more likely that North Korea is not yet technologically competent with satellite systems. They are obviously more concerned with the launch vehicle than the satellite itself, and the last minute changes to the rocket performed by Iranian scientists shows that they do not yet have the appropriate level of in-house expertise.