The Washington Post later reported:
[Subsequent reports of February 10, 2016 indicate the satellite is not viable “the satellite was tumbling and essentially useless - just as happened with the Kwangmyŏngsŏng-3 Unit 2 satellite in December of 2012.”
In any case a missile or rocket booster is a dual-use means of launching satellites or warheads. Much of the launch and guidance computer hardware and software is also dual use.
Note that Japan also has a dual-use Epsilon rocket/missile program. Japan also stresses that Epsilon is a peaceful satellite booster.