What exactly was the data published?

The published database allegedly contains full names, OIBs, dates of birth, and JMBGs of 86,000 Croatian citizens.

Who is behind the data release?

Responsibility was claimed by INF Grupa, which presents itself as a Serbian hacker group.

Why did the hackers publish the data?

They cite revenge over the arrest of a 33-year-old Serbian national in early August 2026, suspected of hacker attacks on Croatian institutions.

Croatia

Hackers Publish Sensitive Data of 86,000 Citizens, Claim It's from the Judiciary

Q: Is the data really from the judicial system?

The hackers claim so, but there is currently no official confirmation from Croatian institutions that the data leak came from the judicial system.

A.F. · Prije 7h | 2 min

The hacker group INF Grupa claims the data, including personal identification numbers and unique master citizen numbers, was taken from Croatia's judicial system. The release is motivated by revenge over the recent arrest of a 33-year-old Serbian national.

Summary

The hacker group INF Grupa published personal data of 86,000 Croatian citizens on the dark web.
The published data includes OIBs, dates of birth, and JMBGs.
The release is motivated by revenge over the arrest of a Serbian national suspected of hacker attacks.
There is no official confirmation that the data was taken from the judicial system, as the hackers claim.

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The Serbian hacker group INF Grupa has published a database containing personal data of 86,000 Croatian citizens on hacker forums and the dark web, as reported by tportal. The hackers claim the information was taken from Croatia's judicial system, although there is still no official confirmation from the relevant institutions.

What's in the Published Database?

According to INF Grupa's claims, the database contains highly sensitive data: citizens' full names, personal identification numbers (OIB), dates of birth, and unique master citizen numbers (JMBG). The group states it previously had around 60,000 records and has now added 26,000 new ones to that amount.

Release as an Act of Revenge

As the motive for the free publication of the data, the hackers cite revenge for the arrest of a 33-year-old Serbian national. He was arrested by Croatian authorities in early August 2026 on suspicion of unauthorized intrusions into computer systems and websites of Croatian state bodies and other legal entities. The media linked the suspect to a series of hacker attacks on Croatian institutions.

Interestingly, INF Grupa denies any connection with the arrested man, claiming he is not a member and has nothing to do with their activities. Despite this, they used his arrest as a pretext for a new release.

Threats Continue

In their statement, the hacker group said they are still active and announced new attacks. In recent months, INF Grupa has been linked to multiple cyberattacks on Croatian institutions and organizations, taking responsibility for certain incidents and accompanying them with political and anti-Croatian messages.

No Official Confirmation of the Leak's Source

Although the hackers claim the data originates from Croatia's judicial system, there is currently no official confirmation from Croatian institutions that the leak actually occurred in that manner. Therefore, INF Grupa's claims should be taken with a grain of salt.