Question What does "comb a network" mean ?

[shaharhada]

Pyongyang's hackers have also combed the networks of various foreign governments and companies for key technical information that might be useful for its nuclear program, according to a private United Nations report in February reviewed by CNN.

https://edition.cnn.com/2023/04/09/politics/north-korean-crypto-hackers-crackdown/index.html

What does "comb a network" mean ?

 

[COLGeek]

It is a way of saying they looked through the contents of the sites they accessed.

This is related to a common English saying "with a fine-tooth comb":

https://dictionary.cambridge.org/us/dictionary/english/fine-tooth-comb