NATO Investigating Alleged Data-Theft Hack on COI Cooperation Portal

NATO’s IT team is currently investigating claims of a data-theft hack on the Communities of Interest (COI) Cooperation Portal. The hacking group known as SiegedSec is allegedly responsible for this breach.

The COI Cooperation Portal ( serves as NATO’s unclassified information-sharing and collaboration environment, supporting NATO organizations and member nations.

Yesterday, the hacking group SiegedSec posted on Telegram, claiming to have stolen hundreds of documents from the COI Cooperation Portal.

SiegedSec post on Telegram

Cybersecurity company CloudSEK analyzed the leaked data and discovered that it consists of 845MB of files, 8,000 rows of user-related sensitive information, unclassified documents, and user account access details.

The leaked data includes the following details:

  • Full name
  • Company/Unit
  • Working group
  • Job Title
  • Business Email ID
  • Residence address
  • Photo

CloudSEK’s analysis reveals that if the data leak is confirmed, it will affect 31 nations that are members of the NATO alliance.

When asked to comment on the authenticity of the leaked data, a NATO official stated that they are currently investigating the claims.

“NATO cyber experts are actively investigating the recent claims associated with the Communities of Interest Cooperation Portal,” said a NATO spokesperson.

“We face malicious cyber activity on a daily basis, and NATO and Allies are responding to this reality by strengthening our ability to detect, prevent, and respond to such activities.”

SiegedSec, previously responsible for breaching the software company Atlassian and leaking thousands of employee records, email addresses, phone numbers, and names, appears to be driven by motives other than financial gain.

These threat actors seem to be hacktivists who aim to leak stolen data and create chaos to make a statement or simply for fun.

In reference to the alleged COI portal hack, SiegedSec claims that the attack is a protest against NATO member countries’ violations of human rights.

“We want to emphasize that this attack on NATO has nothing to do with the war between Russia and Ukraine. It is a retaliation against NATO countries for their attacks on human rights. Also, it’s fun to leak documents ^w&^,” SiegedSec wrote on their Telegram channel.

Leave a Reply

Your email address will not be published. Required fields are marked *