There is always a posible conflict of interest between employees and owners of any business, and that includes bureaucrats and citizens of a nation. The general presumption, however, is that in the end everyone's best interests are preserved. I see nothing wrong in government "spying" on citizens such as criminals, terrorists, corporate cheats, and so on. Even a policeman walking down the street noting what is going on can be deemed "spying" if you are paranoid enough.
It's a tradeoff between having effecting governance and anarchy.
Being adjudicated by whom, Frank?
It is disheartening, but somehow not surprising, to have a Vietnamese come down on the side of the government, instead of down on the side of the individual and the rule of law.
Authoritarianism and statism thrive in Vietnam, it appears.