From bbc.co.uk
![Image of missile firing from ship](https://ichef.bbci.co.uk/news/976/cpsprodpb/8915/production/_126439053_410a34f1-4b37-4a21-96d4-6e991153a69f.jpg)
Nato is assessing the impact of a data breach of classified military documents being sold by a hacker group online.
The data includes blueprints of weapons being used by Nato allies in the Ukraine war.
Criminal hackers are selling the dossiers after stealing data linked to a major European weapons maker.
MBDA Missile Systems admitted its data was among the stash but claimed none of the classified files belong to the firm.