The recent cyberattack that forced the Dutch Research Council (NWO) to take its servers offline and suspend grant allocation processes was caused by the DoppelPaymer ransomware gang.
The hackers gained access to NWO’s network on February 8 and stole internal documents, threatening with leaking them unless the organization paid a ransom.
Since NWO does not cooperate with cybercriminals, DoppelPaymer published proof of the stolen internal data on their leak site. This tactic is typical to ransomware gangs and the purpose is to pressure victims into paying the ransom.
Source: Bleeping Computer