This footage was filmed and produced 3 May 2023.

NATO says it is “actively addressing incidents” affecting its unclassified websites after a hacking group claimed to have stolen numerous strategic planning and research documents from the alliance.

The apparent cyber intrusions raise questions about NATO’s ability to protect communication networks where the alliance shares unclassified but non-public insights into emerging technologies and security threats.

The trove of purported NATO documents posted online in the last week covers topics such as hypersonic weapons, threats from drones, and testing procedures for radioactive waste.

“NATO is facing persistent cyber threats and takes cyber security seriously,” a NATO official said in a statement to CNN on Tuesday. “NATO cyber experts are actively addressing incidents affecting some unclassified NATO websites. Additional cyber security measures have been put in place. There has been no impact on NATO missions, operations and military deployments.”

This footage illustrates NATO headquarters in Brussels, Belgium (May 3, 2022)