North Korea used several Dutch servers for conducting large-scale cyber operations throughout 2021, according to the Netherlands’ main spy agency on Friday. 

The General Intelligence and Security Agency revealed the intrusions in its latest annual report that reviews Dutch intelligence activities over the previous year.

One of those attacks targeted Western cybersecurity researchers to gain insight into how much they know about the DPRK’s cyber capabilities, the report says without elaborating. Dutch intelligence did not mention which researchers were targeted or where they were based.

According to the report, Pyongyang co-opted the country’s internet for its speed and reliability, qualities